Review on Oudtinx Electronic Digital Dial Indicator Gage Gauge: 0-1 Inch/25.4 Mm With Auto Off & Back Lug Measuring Tool by Jeffrey Johnston

This measures accurately for me so far and does exactly what I bought it for. Also the ON/OFF switch properly shuts off the power so the battery doesn't run down when not in use. Many of the other inexpensive (made in China) digital calipers and gauges etc. only blank the display when you turn them off but leave the electronics drawing power from the battery. This one shuts off correctly and the battery lasts a long, long time!