Grip Thread Pitch Gauge MM & SAE Markings - Measures Counts from .25 to 5.5mm and 4 to 42 SAE - 60 Degree Thread Profiles and Locking Devices - Garage, Workshop, Home - Hand Tool Sets - Amazon.com
JEGS 80715: Bolt & Nut Gauge | Standard and Metric Sizes | Thread Gauge - JEGS
General Tools Mfg, CO, LLC Hand tools for knife makers