Thank you. Am I measuring wrong?
Just a little, notice in the first image, the first 4 teeth on Left hand side, do not line up.
Move the stamp down towards the half till they all line up.
Poor eyesight? Bailey, you can get a desktop magnifier on a stand,
so you can carry out guaging, hands free.http://goscf.com/t/45998
You can buy cheaper models from eBay
NOTE: his shirtsleeves are going to drag all his stamps on the floor....