... ranges are separately80~130mm,130~230mm,230~350mm,350~480mm,480~750mm.its measuring precision is 0.02mm. 1. IntroductionThe measuring ranges ... separately 80-130mm. 130~230mm. 230~350mm, 350~480mm and 480~750mm. Its measuring precision is 0.02mm. The three point caliper ... 130~230mm ±0.02 4 350~480mm ±0.02 5 480~750mm ±0.024. Using methodSelect a fit three point caliper gauge ...