Standard Abrasives 726015, A/O R6 Straight Precision Cartridge Roll, 3/8 in x 1-3/4 in x 1/4 in 120, 7100098770 
Insize 2422-E800, BORE GAGE, 15.7-31.5″, 6928640357121
$8,085.23
Applicable for .001″ or .0001″ or .00005″ graduation dial indicators.
Optional accessory: Dial indicator or dial comparator, Setting ring (part no. 6313), Long handle (part no. 7352).
Range: 15.7-31.5″
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