Inside Micrometer, 2-300mm, 0.004mm

2-300mm mechanical three hole micrometer with good price. High precision of 0.004mm can accurately measure the inner diameter of the measured object. When there is an error in the micrometer measurement, you can use a calibration ring gauge, a small wrench and a screwdriver for calibration.

Specification

Parameters Table

Product Code	Measuring Range	Precision	Calibration Ring Gauge	L
01	2-2.5mm	0.004mm	Φ2.5mm	12.5mm
02	2.5-3mm	0.004mm	Φ2.5mm	12.5mm
03	3-4mm	0.004mm	Φ4mm	22.5mm
04	4-5mm	0.004mm	Φ5mm	22.5mm
05	5-6mm	0.004mm	Φ6mm	22.5mm

Continued Table 1

Product Code	Measuring Range	Precision	Calibration Ring Gauge	L1	A	Extension Rod
Chrome plated on the outer surface
01	6-8mm	0.004mm	Φ6mm	54.5mm	1.5mm	100mm
02	8-10mm	0.004mm	Φ8mm	54.5mm	1.5mm	100mm
03	10-12mm	0.004mm	Φ10mm	54.5mm	1.5mm	100mm
04	12-16mm	0.004mm	Φ16mm	80mm	0.5mm	150mm
05	16-20mm	0.004mm	Φ16mm	80mm	0.5mm	150mm
06	20-25mm	0.004mm	Φ25mm	90mm	0.5mm	150mm
07	25-30mm	0.004mm	Φ25mm	90mm	0.5mm	150mm
08	30-40mm	0.004mm	Φ40mm	97mm	0.5mm	150mm
09	40-50mm	0.005mm	Φ40mm	97mm	0.5mm	150mm
External surface painting
10	50-63mm	0.005mm	Φ62mm	114mm	0.5mm	150mm
11	62-45mm	0.005mm	Φ62mm	114mm	0.5mm	150mm
12	75-88mm	0.005mm	Φ87mm	114mm	0.5mm	150mm
13	87-100mm	0.005mm	Φ87mm	114mm	0.5mm	150mm

Continued Table 2

Product Code		Measuring Range	Precision	Calibration Ring Gauge	L1	Extension Rod
Anodized outer surface	External surface painting
14-08	15-08	30-40mm	0.004mm	Φ40mm	97mm	150mm
14-09	15-09	40-50mm	0.005mm	Φ40mm	97mm	150mm
14-10	15-10	50-63mm	0.005mm	Φ62mm	114mm	150mm
14-11	15-11	62-75mm	0.005mm	Φ62mm	114mm	150mm
14-12	15-12	75-88mm	0.005mm	Φ87mm	114mm	150mm
14-13	15-13	87-100mm	0.005mm	Φ87mm	114mm	150mm
14-14	15-14	100-125mm	0.005mm	Φ112.5mm	145mm	150mm
14-15	15-15	125-150mm	0.005mm	Φ137.5mm	145mm	150mm
14-16	15-16	150-175mm	0.005mm	Φ162.5mm	145mm	150mm
14-17	15-17	175-200mm	0.005mm	Φ187.5mm	145mm	150mm
14-18	15-18	200-225mm	0.007mm	Φ212.5mm	145mm	150mm
14-19	15-19	225-250mm	0.007mm	Φ237.5mm	145mm	150mm
14-20	15-20	250-275mm	0.007mm	Φ262.5mm	145mm	150mm
14-21	15-21	275-300mm	0.007mm	Φ287.5mm	145mm	150mm

Feature

1. Three-jaw inner diameter micrometer has a hard alloy surface and a ratchet wheel for force measurement.
2. Inner diameter micrometer adopts a three-point design, which can accurately measure the inner diameter.
3. Aluminum packaging box can protect the micrometer from damage.
4. The three-point internal micrometer is made of steel, which is sturdy and durable, and can be used for a long time.

Tips: Precautions for the use of micrometers

When measuring, pay attention to stop using the knob when the micrometer screw is approaching the object to be measured, and use the fine-tuning knob instead to avoid excessive pressure. It can not only make the measurement result accurate, but also protect the spiral micrometer.

When reading, pay attention to whether the half-millimeter engraved line on the fixed scale has been exposed.

When reading, there is an estimated number in the thousandth, which can not be thrown away casually. Even if the zero point of the fixed scale is exactly aligned with a certain scale line of the movable scale, the thousandth should also be read as "0".

When the small anvil and the micrometer screw are close together, the zero point of the movable scale does not coincide with the zero point of the fixed scale, and there will be a zero error, which should be corrected, and the zero error value should be removed from the final length measurement reading.