The Hat Bible
Head and Hat Sizing

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The measurement of the head for hat sizing is taken as shown in the diagram opposite.

A tape measure is placed on the forehead and passed around the head, ensuring that the widest part of the head is included.

A  female's average head is size  22 1/2 inches.


INCHES 20 1/2 20 7/8 21 1/4 21 5/8 22 22 1/2 22 7/8 23 1/4 23 5/8 24 24 1/2
CENTIMETER 52 53 54 55 56 57 58 59 60 61 62
USA 6 1/2 6 5/8 6 3/4 6 7/8 7 7 1/8 7 1/4 7 3/8 7 1/2 7 5/8 7 3/4
ENGLISH 6 3/8 6 1/2 6 5/8 6 3/4 6 7/8 7 7 1/8 7 1/4 7 3/8 7 1/2 7 5/8
PUNTI 2 1/2 3 3 1/2 4 4 1/2 5 5 1/2 6 6 1/2 7 7 1/2

For your interest I have shown below a ruler produced by a Company called Wilson and Stafford, who were Hat and Felt hood makers in the United Kingdom but sadly no longer in business. It Shows Punti hat sizing. Which is interesting, as no one appears to know anything about it. Here is a plausible theory put forward by Reverend Antonio Hernandez: Go to our front page to download a copy of the Reverends  Excellent My Kingdom for a Crown

"In ancient and relatively recent times, hatters would be making caps in general, yes? And they need two measurements to give them a three-dimensional idea of the cap: head diameter and some sort of measurement for the crown height. I THINK THAT'S WHAT PUNTI IS- CROWN HEIGHT. It would serve almost as well as circumference or diameter if taken alone. I think my own head size bears this out. Remember I mentioned that the Punti measure is obtained by using pi+1? Well that might even be too complex: my size in Punti is 5 1/2. From the crown of my head down to the level where the circumference measure is taken is exactly 5 1/2"! Now if you double that you get 11"- the diameter of the hemisphere. If you double 11" you get 22", which is a good starting base if you are hand-making a cap for someone, especially a skullcap. My paper, as you will soon read, links skullcap and hood development. I think Punti was originally used for making the pilus. Now of course this could be a bit off- I mean it was used for hoods and the like, yes? Perhaps it was meant as a starting point (ha-ha) to determine hood length, i.e., the length of the point. Or perhaps the height of the hat-crown. But I doubt it. I think my theory is right. The other things got me thinking about this: in the UK my hat size is 7 1/8- why, if my head diameter is 7 1/4"? Then I ran across a problem here in America- some nasty hat manufacturers shot me a rude e-mail, after I informed them their chart was off; they told me that they use their own hat-blocks, which is why their chart is off. Well I shot back and said measurement equivalents don't lie, and that chart should be corrected. I added that if they use a different numbering system on their blocks, they should reflect that in the chart. I think Punti was originally someone's individual hat-block sizing system, and it dovetailed into our modern hat-sizing methods, probably losing an additional measure: my own measurements in Punti, for example, might once have been written thusly: 7 1/4-5 1/2. What other measures would a hatter need? The diameter, and then half the circumference from the center down along one side- from point to point! Hence "Punti".


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