Resolution 0.001mm/0.0001″ (resolution of 3506-100A and 3506-150A is 0.001mm/0.00005″).
IP65 dust/waterproof.
Button function: on/off, set, mm/inch, ABS/INC, data output.
LR44 battery, automatic power off. Ratchet stop.
Carbide measuring faces.
Supplied with setting standards.
Optional accessory: data output cable (code 7315-30, 7302-30).

3M 27259, Ultra Durable 5 inch Power Sanding Discs, Universal Hole, 120 grit, 7100188461, 5 per pack
3M 02140, Fibre Disc Backup Pad, TN Quick Change , 4-1/2 in x 5/8-11 Internal, 7000045746 