Reply To: Questions about digital calipers

[Marion Hansen]

Many years ago I purchased the least expensive digital caliper. It has three buttons of which two work excellently, and one that is a serious problem. The two that work are ZERO and METRIC/SAE. The third button is labeled ON/OFF, and now the fun begins . . . what does OFF really mean. For this caliper, it means that the digital display is no longer ON. However, this doesn’t imply that the caliper is OFF to the extent that it will not discharge the battery! Thus, when not in use for some time the battery needs to be removed. Now I’ve been using the same battery for years. This is an example where OFF means OFF TO SOME DEGREE.