#3685: Ruling Pens, Grease Pencils, and the Case for Better Old Tech

Why a 400-year-old drafting tool outperforms modern alternatives, and how to spot genuinely superior antiques.

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A self-described tech enthusiast recently made a confession: he fell in love with a 400-year-old drafting tool called the ruling pen. This simple device — two metal blades held by a thumbscrew — can lay down ink lines with precision that modern paint markers and technical pens still can't match. It works with any liquid medium, never clogs permanently, and has no moving parts except the thumbscrew. This raises a bigger question: what else did previous generations just do better?

The key is distinguishing between genuinely superior old tech and objects valued purely for sentiment or aesthetics. Victorian hair jewelry (woven human hair accessories) belongs to the latter category. But tools like the ruling pen, grease pencil, machinist's surface gauge, and vintage cast iron cookware represent something different — designs that hit a functional ceiling early and haven't been meaningfully improved since. A Stanley hand plane from 1920, bought for thirty dollars at a flea market, can outperform a modern two-hundred-dollar plane after an hour of tuning.

There's a golden window in manufacturing history, roughly 1880 to 1960, when machining capabilities were mature but cost-cutting and planned obsolescence hadn't stripped quality out of everyday tools. The market creates a fascinating inefficiency: collectors price antiques based on rarity and condition, while functional tools with honest wear remain undervalued. The trick is learning to spot the difference between a collectible and a tool that's genuinely better than anything made today.

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#3685: Ruling Pens, Grease Pencils, and the Case for Better Old Tech

Corn
Daniel sent us this one — and it's basically a confession of selective antiquing. He's always thought of himself as anti-antique, a tech guy through and through. But he recently fell in love with the ruling pen, this four-hundred-year-old drafting tool that still outperforms anything modern for precision line work. So now he's wondering what else the past just did better, and more importantly, how do you separate the genuinely superior old tech from the stuff people collect just because it's old and pretty. It's a really interesting question about function versus nostalgia.
Herman
This is exactly the kind of question that makes people in the antique world uncomfortable, because it draws a line right through their whole value system. You've got people who collect Victorian hair jewelry — no functional value whatsoever, pure sentiment and aesthetics — and then you've got people who use a hundred-year-old Stanley number four plane every day because nothing at the hardware store comes close. Same label, "antique enthusiast," completely different operating systems.
Corn
Victorian hair jewelry.
Herman
Oh, it's a whole thing. Human hair woven into bracelets, brooches, watch chains. Mourning jewelry, mostly. Very big in the eighteen hundreds.
Corn
That's the arts and crafts equivalent of keeping your toenail clippings in a jar.
Herman
Yet people pay thousands for it. But that's exactly the split the prompt is getting at. There's the antique world of sentiment and aesthetics and patina — which is fine, no judgment on people who love that — and then there's the world of antiques that are just better engineered than their modern replacements. The ruling pen is a perfect entry point to this.
Corn
Let's talk about the ruling pen for a minute, because I think most people have never even seen one. What is it, and why is it better?
Herman
A ruling pen is essentially two metal blades that come together at a point, held by a thumbscrew. You load ink or paint between the blades, and it flows out in an incredibly precise line. They were the standard drafting tool from roughly the sixteen hundreds until technical pens took over in the mid twentieth century. Architects, engineers, cartographers — anyone who needed consistent line width used a ruling pen. And here's what's wild: the ruling pen can still do things that modern paint markers and technical pens cannot.
Herman
Line width control down to fractions of a millimeter, for one. You adjust the thumbscrew and suddenly you're laying down a line that's point zero five millimeters or a full millimeter, and it's perfectly consistent. Modern paint markers flood. They blob at the start of a line. They're unpredictable on different surfaces. A ruling pen, once you learn to use it, gives you exactly what you dial in. It also works with basically any liquid medium — india ink, acrylic paint, gold size, enamel. Try putting gold size through a modern technical pen and you'll destroy it.
Corn
It's not just that it's charmingly old — it's actually more versatile.
Herman
A ruling pen has no moving parts except the thumbscrew. It never clogs permanently because you can open the blades completely and clean every surface. Compare that to a modern paint marker where the valve mechanism fails and the whole thing is trash. Or a technical pen where dried ink means you're soaking it in solvent for three days and praying.
Corn
There's something almost perverse about a four-hundred-year-old design that refuses to be improved upon. Like the wheel, or the spoon.
Herman
Or the safety pin. Walter Hunt invented the safety pin in eighteen forty-nine and the design has not changed in any meaningful way since. The spring coil, the clasp — it's perfect. Every attempt to "improve" it has made it worse.
Corn
That's the category we're looking for. Things where the original design hit a ceiling — not because nobody tried to improve it, but because the physics of the problem were already solved. But here's my question: how do you tell the difference between a ruling pen and a vinyl record?
Herman
Right, because the prompt brings up vinyl as the counterexample. And I think this is where the debate gets really interesting, because vinyl enthusiasts will fight you in the street over this.
Corn
They're very committed.
Herman
And I want to be careful here because I know people who love vinyl, and I'm not here to ruin anyone's Saturday morning ritual. But from a fidelity standpoint, the prompt is completely correct. Vinyl is inferior to digital audio on basically every measurable dimension. Frequency response, dynamic range, channel separation, noise floor, wow and flutter, distortion — digital wins across the board. A compact disc from nineteen eighty-two outperforms the best vinyl pressing ever made on every technical metric.
Corn
Why do people insist it sounds better?
Herman
A few things are happening. One is that vinyl introduces harmonic distortion that some people find pleasing — it's technically degradation, but it's degradation that happens to sound warm to human ears. The second is that a lot of modern digital masters are aggressively compressed and sound terrible, not because digital is bad but because mastering engineers are making bad choices. And the third is ritual. The act of putting on a record, the large artwork, the deliberate listening — it changes how people pay attention, and they attribute the improved experience to the medium rather than to the attention they're giving it.
Corn
Vinyl isn't better — it's just that the listening experience is different, and people conflate the two.
Herman
And that's the line. A ruling pen is objectively better at certain tasks. Vinyl is subjectively preferred by some people. Those are different categories.
Corn
Which brings us to the core question: what other things fall into the ruling pen category? What else did previous generations just do better?
Herman
Let me start with something that'll resonate with anyone who's ever tried to write on a greasy surface. The grease pencil, also called a china marker. It's basically a wax-based pencil wrapped in paper that you peel back as you use it. Invented in the early twentieth century, and it's still the best tool for writing on glass, metal, plastic, wet surfaces, oily surfaces. Modern dry-erase markers won't stick to oil. But a grease pencil just works, and it's completely immune to temperature, moisture, and surface contamination.
Corn
I've seen those in hardware stores and never thought about them. They look like a crayon had a baby with a pencil.
Herman
They're basically unchanged for a century. The paper wrap is the whole mechanism — there's nothing to break. Another one: the machinist's surface gauge. It's a precision scribing tool used in metalworking, and the basic design from the early nineteen hundreds is still what professionals reach for. A cast iron base, an adjustable arm, and a hardened steel scribe point. No batteries, no calibration drift, no software updates. It just marks a line at a precise height relative to a surface plate, and it'll do that for fifty years without complaint.
Corn
I'm noticing a pattern here. No batteries, no software, no planned obsolescence.
Herman
That's a huge part of it. And it connects to something the prompt is really circling around, which is that pragmatic antique enthusiasm is fundamentally about rejecting the parts of modern manufacturing that are worse. Not all of it — nobody's rejecting modern metallurgy or precision machining. But the stuff that's designed to fail, the stuff that's optimized for cost at the expense of function — that's what the ruling pen crowd is walking away from.
Corn
It's almost like there's a sweet spot in manufacturing history. Too early, and the metallurgy wasn't there, the tolerances were sloppy. Too late, and you're in the era of injection-molded plastic and planned obsolescence. But there's this golden period — roughly, what, eighteen eighty to nineteen sixty?
Herman
That's a really good window. You've got the Industrial Revolution's machining capabilities fully matured, quality steel is widely available, but you haven't yet hit the point where cost accounting started stripping the quality out of everything. A hand plane made by Stanley in nineteen twenty is going to have a thicker casting, better steel in the blade, and more care in the machining than most planes made today under a hundred and fifty dollars. And you can buy that hundred-year-old plane for thirty bucks at a flea market, spend an hour tuning it up, and it'll outperform a modern two-hundred-dollar plane.
Corn
That's the part that blows my mind. It's not just better — it's often cheaper.
Herman
Because the market prices antiques based on collectibility, not functionality. A Stanley Bedrock number six-oh-five, which is one of the best smoothing planes ever made, might cost you a hundred and fifty dollars in good condition. A modern Lie-Nielsen equivalent — which is a direct copy of the Bedrock design, by the way — costs four hundred dollars. The antique is the budget option.
Corn
The antique premium is actually inverted in some categories.
Herman
For user tools, absolutely. The premium is on pristine collector pieces with original boxes and decals. A plane with eighty percent of its original japanning and some honest wear? That's a user, and users are cheap. The collectors are chasing condition, not function, which means the functional antiques are undervalued relative to what they can do.
Corn
That's a fascinating market inefficiency. The collectors are pricing in rarity and aesthetics, and the users get to benefit from all the engineering without paying the premium.
Herman
This is where the prompt's question about identifying these things gets really practical. Because there are tells. If you walk into an antique store and see something that looks like it was made to be used hard for a hundred years, and there's no obvious modern equivalent that's built the same way, you might be looking at a ruling pen situation.
Corn
Give me some more examples. What else is out there?
Herman
Let's talk about cast iron cookware. A Griswold skillet from the nineteen thirties has a machined cooking surface that's almost glass-smooth. Modern cast iron, even from good brands like Lodge, comes with a pebbly surface from the sand casting that they don't machine down anymore. You can season it and build up layers to smooth it out, but it takes years. A vintage Griswold is smooth the day you strip and reseason it. And the casting itself is thinner and lighter — they used better iron and more precise molds.
Corn
It's lighter, smoother, and better at the one thing a skillet is supposed to do.
Herman
It costs about the same as a new Lodge if you're patient on eBay.
Corn
What about things that aren't tools? The prompt mentions being into technology — are there antiques that a tech person would appreciate?
Herman
A good slide rule — say, a K and E Deci-Lon from the nineteen sixties — is an analog computer that requires no power, works in a vacuum, and can do multiplication, division, trigonometry, logarithms, and roots to three significant figures faster than you can pull out your phone. Engineers used them to design the Saturn Five rocket. Every major bridge and skyscraper built before the nineteen seventies was calculated on slide rules.
Corn
They're beautiful objects. All those scales, the cursor, the precision etching.
Herman
They teach number sense in a way that calculators don't. With a calculator, you punch in numbers and trust the output. With a slide rule, you have to track the order of magnitude in your head — the slide rule gives you the digits, and your brain supplies the decimal point. It forces you to actually think about what the answer should be.
Corn
That's the thing about a lot of these older tools. They don't just do the job — they make you better at understanding the job.
Herman
There's a concept in tool design called "transparency." A transparent tool reveals the mechanism. A hand saw is transparent — you can see the teeth, you can feel the cut, you understand what's happening. A circular saw is opaque — the blade spins, the guard covers it, the motor makes noise, and you just kind of trust that it's cutting. Neither is morally superior, but transparent tools teach you the physics of the operation. Opaque tools hide it.
Corn
If you're the kind of person who wants to understand the thing you're doing, older tools are often more satisfying even beyond the functional advantage.
Herman
That connects to the second part of the prompt — how do you identify as a pragmatic antique enthusiast in opposition to the mainstream antiquers? Because the mainstream antique world is often about rarity, provenance, and aesthetics. The pragmatic user is about function. Those value systems barely overlap.
Corn
It's almost a completely different hobby that happens to involve the same objects.
Herman
A collector might buy a nineteenth-century molding plane because it has a maker's stamp from a rare Ohio planemaker and it's in mint condition. A user buys a molding plane because they need to reproduce a historic profile in a house they're restoring and the modern router bits don't match. The collector puts it on a shelf. The user puts it to wood.
Corn
The user probably paid a tenth of what the collector paid.
Herman
For the exact same plane, minus the bragging rights. The collector plane might have ninety-five percent of its original finish and a crisp stamp. The user plane has some rust and a chip in the wedge, but the iron is still good and the profile is still accurate. Functionally identical for the actual work.
Corn
How do you find the user-grade stuff? Where do you even look?
Herman
Flea markets, estate sales, and the "for parts or repair" listings on eBay. Also, and this is a pro tip, look for the tools that are covered in grime. Collectors want clean. Users want cheap. A plane that's caked in sawdust and surface rust is going to sell for nothing, and half an hour with some evaporust and a Scotch-Brite pad will reveal a perfectly functional tool underneath.
Corn
The grime discount.
Herman
The grime discount is real. I've bought hand planes for fifteen dollars that needed nothing but cleaning and sharpening, and they outperform anything under two hundred dollars new.
Corn
What about things that aren't tools at all? Are there categories where the old version is just better designed as an object?
Herman
Mechanical watches are an interesting case. A quartz watch is more accurate, cheaper, and more durable than any mechanical watch ever made. A ten-dollar Casio keeps better time than a Patek Philippe. But mechanical watches are marvels of micro-engineering — hundreds of tiny parts, no battery, powered by the motion of your wrist. They're worse at the primary function but better as objects of human ingenuity.
Corn
A mechanical watch is more like vinyl, not like a ruling pen.
Herman
It's the aesthetic and engineering appreciation, not functional superiority. The ruling pen category requires that the old thing actually does the job better. Not equally well, not differently — better.
Corn
Let me throw out a category and see if it fits: double-edge safety razors.
Herman
That's a great one. A vintage Gillette Fatboy from the nineteen fifties is a better razor than most modern cartridge razors. The blades are sharper because they're not coated in that lubricating strip that gums up. The single blade cuts cleanly instead of the lift-and-cut multi-blade system that tugs the hair and causes ingrown hairs. The weight of the razor does the work so you don't press down. And the blades cost ten cents each instead of four dollars per cartridge.
Corn
Again, it's cheaper.
Herman
A hundred-pack of Feather double-edge blades is about thirty dollars and will last most people two years. A year of Gillette Fusion cartridges costs something like a hundred and fifty dollars. The antique razor plus a lifetime supply of blades costs less than a single year of cartridges.
Corn
That's the kind of math that would make a tech person's brain light up. It's not nostalgia — it's optimization.
Herman
Optimization is exactly the right frame. The prompt is from someone who works in tech and automation. This isn't about romanticizing the past. It's about identifying where the past accidentally got something right and the present accidentally made it worse, often for reasons that have nothing to do with function.
Corn
The cartridge razor is a perfect example of that. It's not worse because engineers forgot how to make razors. It's worse because the business model demanded recurring revenue and patent-protected consumables.
Herman
The razor-and-blades model, literally. And once you start seeing that pattern, you see it everywhere. Inkjet printers with chipped cartridges. Coffee pod machines. Smart home devices that brick themselves when the company shuts down its servers. A lot of modern products are optimized for extraction, not function.
Corn
One heuristic for finding ruling-pen-style antiques is: look for categories where the modern version is subscription-based or consumable-locked, and the old version was designed to be owned and maintained.
Herman
That's a fantastic heuristic. And it applies to a lot of kitchen equipment too. A vintage stand mixer from the nineteen fifties — a Sunbeam Mixmaster or an early KitchenAid — has metal gears and a motor that can be rebuilt. A modern KitchenAid, unless you buy the top-tier model, has plastic gears that strip under heavy load. The vintage one is repairable. The modern one is replaceable.
Corn
The vintage one is often cheaper on the used market.
Herman
Because it's not "new" and it doesn't have a warranty. But the warranty on a modern appliance is a year, and the vintage one has already lasted seventy.
Corn
What about audio equipment, since the prompt mentions working with audio professionally? Are there any old audio tools that are better?
Herman
Microphones are the strongest case. A Neumann U-87 from the nineteen sixties is still one of the best vocal microphones ever made, and the modern U-87 AI is essentially the same design with minor tweaks. But the vintage ones command a premium because the capsules age in ways that some engineers prefer. That's more vinyl-adjacent — it's subjective. The stronger case is something like the Shure SM-57, which has been in continuous production since nineteen sixty-five with essentially no changes. It's not vintage versus modern — it's the same thing, still being made, because it's perfect for what it does.
Corn
The SM-57 is a ruling pen that never went away.
Herman
And there are a lot of those — products where the design converged on the optimum decades ago and all the innovation since has been marketing, not engineering.
Corn
I want to go back to something you said earlier about the golden window of manufacturing, roughly eighteen eighty to nineteen sixty. Is there a way to identify products from that era that are worth looking for, even if you don't know the specific category?
Herman
Material tells are a big one. If you pick something up and it's heavier than you expected, that's often a good sign. Not always — sometimes it's just cast iron that should have been aluminum. But generally, mass was not the enemy in that era the way it is now. Manufacturers weren't trying to shave grams to save on shipping costs. A vintage tool feels substantial.
Corn
The heft test.
Herman
The heft test is surprisingly reliable. Another tell: can you see how it works? If you can look at a mechanism and understand the principle in thirty seconds, it's probably well-designed. Over-complication is almost always a modern sin. A third tell: are the fasteners standard? If it uses flathead screws, it's probably from before the Phillips head took over in the nineteen thirties. If it uses hex bolts in standard sizes, it's repairable. If it uses proprietary security screws, it was designed to keep you out.
Corn
Standard fasteners, visible mechanism, surprising heft. That's a good checklist.
Herman
One more: can you find a manual for it? Not a modern PDF, but an original manual that assumes the owner will do their own maintenance. Old manuals are incredible — they include parts diagrams, lubrication instructions, troubleshooting guides. They assumed the user was competent. Modern manuals are mostly safety warnings and a phone number for authorized service centers.
Corn
The manual as a proxy for repairability. I like that.
Herman
It tells you everything about the design philosophy. A company that expects you to fix it builds it differently than a company that expects you to throw it away.
Corn
Let's talk about the social dimension of this, because the prompt asks about being in opposition to mainstream antiquers. I imagine there's some tension.
Herman
There can be. The mainstream antique world often values rarity above all else. A rare piece in poor condition is worth more than a common piece in perfect condition. The user community inverts that — a common piece in good working condition is ideal, because parts are available and the design is proven. The user wants the Toyota Corolla of antiques. The collector wants the one-of-one prototype that never went into production.
Corn
Which means they're often not competing for the same items.
Herman
Most of the time. The friction comes when users modify or "ruin" something that a collector would have preserved. Sharpening a chisel that had its original factory grind. Stripping and refinishing a piece that had original finish. Using a tool that's "too nice to use.
Corn
The "too nice to use" thing drives me crazy. It's a tool. It was made to be used. Not using it is the actual disrespect.
Herman
There's a whole philosophy around this. Some people call it "user collectorship" or "working antiques." The idea is that the highest respect you can pay a well-made tool is to use it for its intended purpose. Letting it sit on a shelf is turning it into a sculpture. Using it keeps it alive.
Corn
It's the difference between owning a horse and owning a painting of a horse.
Herman
And the horse wants to run.
Corn
If someone listening wants to start finding their own ruling pens — their own personal category of old things that are better — where do they start?
Herman
I think you start with a problem. Don't go browsing antique stores looking for things to want. That's how you end up with a house full of decorative junk. Instead, notice when a modern tool frustrates you. When the paint marker blobs. When the kitchen knife won't hold an edge. When the new lamp feels flimsy and tips over. Then ask: was there an era when this was made better? And go looking for that specific thing.
Corn
Problem-first antiquing.
Herman
Problem-first antiquing. It keeps you honest. You're not collecting — you're solving. Every antique you buy is replacing something modern that failed you.
Corn
The cost savings are real, because you're not buying things you don't need.
Herman
Though I should say, it can become its own kind of obsession. Once you realize how much better a vintage cast iron skillet is, you start wondering what else you've been putting up with. You go down the rabbit hole of vintage kitchen tools, vintage woodworking tools, vintage drafting equipment. It can get expensive in aggregate even if each individual piece is a bargain.
Corn
There's a discipline to it. Which brings me to the final part of the prompt — how do you identify as a pragmatic antique enthusiast? What's the identity?
Herman
I think the identity is "user." Simple as that. You're not a collector, you're not a preservationist, you're not a historian. You're someone who uses old things because they work better. The label almost doesn't matter — it's the orientation that matters. You judge objects by function, not by age or rarity or aesthetics. Age is a clue that something might be well-made, not a virtue in itself.
Corn
You could walk into an antique store and walk right past the Victorian hair jewelry without a second glance.
Herman
Without breaking stride. But you'd stop dead in front of a nineteenth-century machinist's chest full of precision tools.
Corn
You'd probably pay less than the person buying the hair jewelry.
Corn
There's something satisfying about that. The market undervalues function and overvalues decoration. The pragmatic enthusiast gets to exploit that inefficiency.
Herman
It's the value investor's approach to material culture. Buy what's undervalued by the market's metrics, hold it forever, use it daily.
Corn
The ruling pen is the perfect mascot for this. Four hundred years old, still unmatched, costs maybe twenty dollars.
Herman
It will outlast you. That's the other thing about this category of objects — they were built before obsolescence was a design strategy. A well-made ruling pen from eighteen fifty will still be a well-made ruling pen in twenty fifty. The modern paint marker you didn't buy instead of it will be in a landfill.
Corn
There's an environmental argument here too, which we haven't even touched. Buying one antique tool that lasts a lifetime versus buying and discarding a series of modern tools that break.
Herman
It's the ultimate in reduce and reuse. The manufacturing energy was spent a century ago. You're just keeping the thing in circulation. And when you're done with it, someone else will use it. These objects have already outlived their original owners. They'll probably outlive us too.
Corn
That's actually kind of moving, in a weird way. Being a temporary steward of something that'll keep working long after you're gone.
Herman
It changes how you think about ownership. You don't really own a hundred-year-old tool — you're borrowing it from the next user.
Corn
Alright, so to pull this together. The ruling pen is not an anomaly. There's a whole category of objects where the old version is, measurably better than the modern replacement. The tells are: simple mechanisms, repairable design, standard fasteners, surprising heft, and a complete absence of planned obsolescence. The sweet spot is roughly eighteen eighty to nineteen sixty. The strategy is problem-first — let your frustrations with modern tools guide you to the old ones that solve the problem better. And the identity is user, not collector.
Herman
That's a really clean summary. The only thing I'd add is that part of the joy here is the learning curve. A ruling pen takes practice. A double-edge safety razor takes practice. A hand plane takes practice. These aren't push-button tools. They reward skill development, and that's part of why people who get into this tend to go deep. It's not just that the tool is better — it's that using it makes you better.
Corn
Which is the opposite of most modern product design, where the goal is to make the tool so easy to use that you never have to think about it.
Herman
There's a place for that. I don't need to understand the thermodynamics of my refrigerator. But for the things you care about — the things you do with your hands, the things that are part of your craft — transparency and skill development are features, not bugs.
Corn
The pragmatic antique enthusiast is really just someone who refuses to outsource their competence to a product manager.
Herman
That's the most tech-industry way you could possibly put it, and I completely agree.

And now: Hilbert's daily fun fact.

Hilbert: In the hot springs of the Aleutian Islands, a bacterium called Thermus aleuticus produces a heat-stable enzyme that chemically cross-links its own DNA using a unique sulfur bridge between cytosine molecules — a molecular adaptation that prevents the double helix from unraveling at temperatures above eighty degrees Celsius.
Corn
I don't know what to do with that.
Herman
I'm just impressed the bacterium figured it out before we did.
Herman
This has been My Weird Prompts. Thanks to our producer Hilbert Flumingtop. If you enjoyed this episode, leave us a review wherever you listen — it helps. Find more at myweirdprompts dot com.
Corn
I'm Corn.
Herman
I'm Herman Poppleberry.
Corn
Go find something old that works better than something new.

This episode was generated with AI assistance. Hosts Herman and Corn are AI personalities.