12+ 1/8 Inch Hair Length

Hair has 3 growth stages:

12+ 1/8 Inch Hair Length. For fade sides and short buzz cuts, a #1 guard is used. A number 3 haircut cut to 3/8 inch;

Speeco S07092400 1 8 Inch Tractor Hair Pin Clips 080235000105 1
Speeco S07092400 1 8 Inch Tractor Hair Pin Clips 080235000105 1 from p1.cdn.hardwareandtools.net
The length of the hair increases as the number rises. The sideburns are also not allowed to be styled to taper, flair, or come to a point. A lot of different styling can be done with it like many fades and parted at the sides.

Head hair will be styled so as not to interfere with the proper wear of uniform headgear.

So it is a common go after styles for men. For example, asking for a number 2 haircut means the #2 guard will be attached to the clipper to leave 1/4 inch of hair on the scalp. The number 5 haircut length is 5/8 of an inch and leaves a lot of hair at the top of the head. Blick brush size chart 24 (11/16) 20 (9/16) flat, bright, filbert, egbert brush width chart.