Resolution: .001″ (range<10"), .01" (range?10"). Repeatability: .001" (range<4"), .004" (range 4~10"), .01" (range?10"). Velocity .039-.394"/_s. Measure the thickness from one side of object, suitable for pipe, tank, etc. Applicable material: metal, plastic, glass, nylon, resin, ceramic, rubber, ice. Memory of maximum 5000 readings with location number Low and high limits with judgement.

3M 65489, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5120TRI-10I, 5 inch UH, 120, 7100202873, 10 per pack
Insize VSP-201-R200, ADJUSTABLE SUPPORT, diameter , 2.36"~7.87", 6940561941340
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956 