3M 21639, PSA Cloth Disc 348D, 36 X-weight, 6 in x NH, Die 600Z, 7000148149 
3M 04020, Mini Mandrel 935, 2-7/8 in x 1/4 in, 7100009221 
Insize 2233-35, INTERNAL THREAD HEIGHT MEASURING INSTRUMENT, 0-3.5mm, 6928640384523
$1,967.97
Dial indicator graduation 0.01mm
Accuracy 0.02mm
Measure the height of internal thread thread with nominal diameter less than 5 1/2″(139.7mm)
Optional accessory: thread height standard blocks
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