Standard Abrasives 875700, HS Mini-Brush, 4-1/2 in x 4 in x 5/8-11 FB018 41-42 A CRS Medium Density, 7010369375 
Standard Abrasives 877012, Unitized Mounted Point, 731 A21 x 1/4 in, 3M 7100074611 
Insize 1121-500A, DIGITAL INSIDE POINT CALIPER, 40-500mm/1.57-20″, 6928640385100
$771.09
Resolution: .0005″/0.01mm.
Measure groove diameter.
Buttons: on/off, set, inch/mm, preset (+, -).
Automatic power off, move the digital unit to turn on power.
Battery CR2032. Data output.
Made of stainless steel.
Optional accessory: depth stop (part no. 6143), data output cable
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