Meet ASTM D 4417-B
Zero set block is included, set zero before measurement
Button function: tolerance Go and No-Go display, data preset, measuring direction change, max./min./TIR measurement, inch/metric conversion, absolute/incremental measurement
CR2032 battery
Automatic power off (time is adjustable)
Stainless steel base
Optional accessory: wireless transmitter code 7315-50M (receiver is needed)