SPI Electronic Internal Caliper Gage This type of gage is perfect for measuring bores, internal grooves, and other hard to reach inside dimensions. Specifications include... 0.8" - 1.6" / 20-40mm Measuring Range 0.0005" / 0.001mm Resolution 0.0012" / 0.03mm Accuracy 1/16" Ball Contact Point 3.150" Arm Length 0.256" Tip Length 0.118" Tip Width Features include... Preset Origin for absolute measurement Origin data recall Absolute and incremental measurement Dial rotates 170?ø Auto power off Furnished in aluminum case Certificate of Calibration
