Insize 2236-20, EXTERNAL THREAD CREST DIAMETER MEASURING INSTRUMENT, 2 3/8″-20″/60.325-508mm, 6928640384653

Dial indicator graduation .0005″
Accuracy .002″
Measure the crest diameter of external thread with nominal diameter larger than 2 3/8″(60.325mm) and less than 20″ (508mm)
Optional accessory: height standard and zero standard block