3M 19771, Utility Cloth Sheet 314D, 9 in x 11 in P100 J-weight, 7000021272 
Insize 4770-600E, PERPENDICULARITY TESTER, 0-24″, 6928640359453
$9,656.02
Optional accessory: dial test indicators, cylinder square ( 4710, for calibration), granite square ( 4141, for calibration).
Range:0-24″
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