Dial indicator / Simple dialer structure , Mature electronic components technology , High reliability , Very few failures Instrument calibration and instrument maintenance is also very simple , maintenance according to the following methods , that is to maintain long-term use (1) The measuring rod should be kept clean , avoid stuck . Wipe the rod with a silk cloth dampened with absolute ethanol and a mixture . (2) This watch is stationary when the measuring rod is stationary 5 min after , the displayed number will be automatically blanked , want to resume display , just press " m/in " button or push the measuring rod . (3) Insufficient battery , when the display is flashing , the battery should be replaced in time to avoid measurement errors . If the battery is replaced , when the number is not normal , can remove the battery 30s , then reinstall the battery . (4) LCD monitors should avoid working in direct sunlight , accelerate the aging of electronic devices . (5) Pay attention to moisture , avoid rusting of metal parts and damage to electrical components . Care should also be taken to avoid oil, water, etc. being immersed in the case . (6) If the surface of the panel is stained , wipe with a towel dampened with water or soapy water , avoid washing with organic solvents , so as not to cause surface damage . (7) Take care to prevent circuit breaks , can't use electric pen to engrave on metal surface , so as not to cause damage to the circuit . Suggest : Do not put scrapped dial gauges in future verifications / Throw away the dial indicator , maybe a part can come in handy in future repairs . This makes use of waste , it also saved money . For more detailed information, please contact Dongguan WorldCom Instrument Testing Service Co., Ltd. 303/304/501 Switch Lines,Data Transmission Line,Usb To Micro Charging Line,Usb-C Charging Line ShenZhen Puchen Electronics Co., Ltd. , https://www.szpuchen.com