Three point measuring ranges are separately80~130mm,130~230mm,230~350mm,350~480mm,480~750mm.its measuring precision is 0.02mm.
1. IntroductionThe measuring ranges of the three point caliper gauges are separately 80-130mm. 130~230mm. 230~350mm, 350~480mm and 480~750mm. Its measuring precision is 0.02mm. The three point caliper gauge utilizing math trigonometric function and vernier measuring principle is a special measuring tool for the three ribs cylinder, the cone bit and the tube etc.This description is applicable to the three point caliper gauge as above.
3. Specification Three point caliper gauge is made up of high quality carbon tool steel T10A, executive GBVT1214-93 standard.
| Item | Measuring range | Reading value |
| 1 | 80-130mm | ±0.02 |
| 2 | 130~230mm | ±0.02 |
| 3 | 130~230mm | ±0.02 |
| 4 | 350~480mm | ±0.02 |
| 5 | 480~750mm | ±0.02 |
4. Using methodSelect a fit three point caliper gauge according to the O.D to be measured. Slide the vernier scale and the sliding claw along the fixed scale to make three measuring surfaces contact to the O.D of the part, and then you can read the value on the fixed scale and the vernier scale5. Notice(1) Keep it clean and forbid it contact the caustic matter. Ought to be spread on it with antitrust grease.(2) Ought to take and place it slightly and avoid impacting it.
(3 point caliper gauge description )Three point digital caliper
