3M 65489, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5120TRI-10I, 5 inch UH, 120, 7100202873, 10 per pack 
Insize 2877-4, DIGITAL ROLLER THICKNESS GAGE, 0-.18″/0-4.5mm, 6928640394447
$1,115.26
Resolution .0005″/0.01mm
Buttons: on/off, inch/mm, zero, data preset, change measuring direction, absolute/incremental measurement.
Keep preset data in memory after restart
Battery CR2032, automatic power off(time is adjustable)
Data output
Optional accessory: data output cable.
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