Review on Mitutoyo 293 348 30 Digimatic Micrometer IP65: Precision Measurement at its Finest by Josel Lambert

Good accuracy and repeatability. It doesn't have an off button. It lights up during zero calibration (zero button press). It turns off over time, but I have calipers with an off button that I feel better about. It can be zeroed in any position so that the difference can be measured. This is still a good non-electronic caliper. Its range is only one inch.