Review on Mitutoyo 500 164 30 Advanced Absolute Digital by Adam Walsh

I am very happy with this purchase. After 19 months of continuous use (50-80 hours per week) they are still running on the same battery. This is very good because I often leave work and forget to turn it off. I use them in wet and dusty environments and they still pass the annual quality calibration. They are strong and sturdy and well worth the price. One caveat: this model doesn't have an auto shut-off feature.