3M 27719, Cubitron, II Roloc Durable Edge Disc 984F, 80+, YF-weight, TR, Maroon, 4 in, Die R400BB, 7100006569, 100 per case 
Dynabrade 95675 1/4" Male Plug with 1/4" NPT Male Thread 
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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