Review on Mitutoyo 950 253 Screw Pitch Gage: Accurate Metric Measurements for Precision Engineering by Jonathan Brendemuehl

This is one of the best thread pitch gauges you can buy when you need to measure standard threads. As a locksmith, I often use this to thread old parts and thread new ones. Smaller double-sided gauges miss some of the thread sizes that this three-sided gauge has. I like the design of the gauge and it has held up well in use.