3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case 
Dynabrade 40378 Rubber Drive Wheel, Mini Dynafile II 
Insize 1129-300, DIGITAL DEEP HOLE INSIDE GROOVE CALIPER, 0-12″/0-300mm, 6928640392528
$580.54
Resolution .0005″/0.01mm
Measure diameter of grooves inside deep holes
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: data output cable