Standard Abrasives 726017, A/O R8 Straight Precision Cartridge Roll, 1/2 in x 1-3/4 in x 1/4 in 180, 7100098766 
Insize 2232-35, THREAD HEIGHT MEASURING INSTRUMENT, 0-3.5mm, 6928640384547
$1,502.47
Dial indicator graduation 0.01mm
Accuracy 0.02mm
Measure the height of exernal thread and internal thread with nominal diameter larger than 5 1/2″(139.7mm)
Optional accessory: thread height standard blocks
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