Thread pitch is stamped on each page
Metric, Unified and Whitwoth form gauges available
Code: 188-151,
0.4 – 7mm / 4 – 42TPI x 60?Combination Metric and Unified thread form,
51 leaves same as 188-122 and 188-111 combined
0.4mm – 7mm / 4 – 42TPI x 60?
