Nipple Diameter Gage

Gage to measure nipple diameter, or outer diameter of a cylinder, in order to determine the appropriate flange to order. The cover photo is mkII. My hope is this helps others save some money, like it did for me. Thankfully, I'm finally at a skill level where I needn't spent $10 on something simple just because it has some companies logo on it. Yes, that's right $10! Outrageous!