The guard chart exists so you can point

Six heads in a grid, each with a number under it, each showing a different length. 1 through 6.

That chart is on the wall of most barbershops in the world, and it exists because language failed at this particular job.

Why does the chart exist?

Because "short at the sides" means nine different things.

Hair length is genuinely hard to describe. Everybody's reference point differs, the same words mean different amounts in different places, and the consequence of a misunderstanding is visible for a month.

So the trade replaced description with a number and a picture. You point at 3, you get a 3. It works across languages, accents and nervousness.

Same solution as a tattoo flash sheet: a numbered menu, on a wall, so that nobody has to explain themselves.

What makes it a good print?

It's a grid of identical silhouettes with numbers — which is almost the ideal garment structure.

Repetition with one variable. Six near-identical shapes where only the length changes reads as a system at a glance, and each individual element is simple enough to survive at a sixth of the print area.

It's also legible in two directions: a barber sees a working reference, a customer sees the thing they point at every six weeks.

Should it be real guard lengths?

Yes, and it's the detail that decides whether the trade takes it seriously.

The standard progression is in eighths of an inch — a 1 is ⅛", a 2 is ¼", up the scale. Printing the fractions under the numbers is what makes it a chart rather than a graphic of one.

Getting them wrong is the same failure as a wrong wiring diagram: invisible to most people, immediately obvious to the audience you wanted.

Can it name a shop?

Your own, yes — and this is one of the better staff shirts available.

A guard chart with the shop's name arched above it is a working reference, a piece of decor and a uniform at once. It's the rare staff garment that's genuinely useful, and customers ask about it, which is the whole point of a shopfront.

Somebody else's shop name, or a clipper manufacturer's brand, isn't yours to print.

Is there a customer version?

The joke version is the one that sells, and it's a single cell rather than the grid.

One head, one number, and the number is the wearer's — ALWAYS A 2. That's a small, dry, personal joke that anybody who has sat in a barber's chair understands instantly, and it's the sort of thing a regular buys.

The grid is for the shop. The single number is for the customer.

Does it work for other appointment trades?

The structure transfers wherever there's a numbered scale nobody outside knows.

Nail shapes, brow mapping, tattoo needle groupings, dog grooming lengths, dental shade guides. All of them are numbered systems that exist because describing the thing failed, and none of them have merchandise.

The strongest are the ones where the customer knows their number too.

Does it print well?

Yes, with the usual attention to the small figures.

Six flat silhouettes with heavy edges and large numerals is robust. The fractions underneath are the only fine element, and they want to be larger than a wall chart would set them — the weave has a floor and eighth-inch fractions sit right at it.

Engraved or flat both work. Engraved suits a traditional shop; flat vector suits a newer one.

How do I get one made?

Describe the chart at JustOG — how many guards, and whether it's for the shop or for one regular. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.

Designs other people have published are in the shop.

Nobody has ever successfully described a haircut. That's why there are numbers.