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Measure the crest diameter of internal thread with nominal diameter larger than 2 3/8” (60.325mm) and less than 20”(508mm)
Range(L): 4 1/2"-20”/144.3-508mm
Dial indicator stroke: 0.5”
Dial indicator graduation: 0.0005”
Accuracy: 0.002”
L: 12"; 18"; 24"
A1: 177mm
A2: 182mm
Optional accessory:
-Height standard and zero standard block
