3M 64314, Cubitron II Depressed Center Grinding Wheel, T27, 6 in x 1/4 in x 7/8 in, 7100094061, 20 per case 
Insize 2435-E1503, BORE GAGES, measuring depth 30″, range 2.0-5.9″, 6928640391132
$3,863.64
Applicable for .001″ or .0001″ or .00005″ graduation dial indicators.
Carbide contact point and anvil.
Optional accessory: dial indicator or dial comparator, setting ring.
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