Review on Revolutionary Pocket Quik Sizer: Accurate Diameter Measurement with Patented Technology by Logan Tripp

This is a must have tool for any shade tree mechanic or even a pro! Accurate, easy-to-use tool. I recently used it to find out the drill bit size for a project. Easy to carry but the only reason for the four stars is that the pocket clip is a little flimsy. But for the price I'll buy another one when I finally wear this one out. Of course, this is better than putting several heads on the bolt to determine the size of the head. I just could never visually determine the right size.