Multitools

So I was trying to measure my head without a tape measure to determine my hat size. I want to buy a Barbour hat online, I hunted the apartment high and low for my tape before remembering I'd lent it to a neighbour thats moved out and I never had it back.
I know a sheet of A4 paper is 297mm on the long edge so used this as my guide, I measured 10 times for ANOVA gauge R&R, but I was still guessing, then I remembered that one of my multi tools had measurement marks on it so I dug them out and and did a few calculations.

I've picked the multitools up from various places, I've owned the Swiss champ the longest nearly 25 years, the Gerber I picked up in the forces and the Leatherman crunch and Wave I was given as work tools.

As you can see the long autumn nights just fly by in the apartment, if your still reading this well done :-)

Oh and I think my head size is 59 or 7 1/4 lol