114-102 10-25mm V-Anvil Micrometer

Enamelled Frame . For the measurement of 3 or 5 fluted end mills, taps and reamers etc. Outside diameters can be directly read, or by applying the single wire method pitch diameters can be measured. Also used for checking out of roundness in centreless grinding operations. Positive locking clamp and constant force ratchet. Accuracy: Measuring Faces:1-15mm /-4 mu m, 5-25mm /-4 mu m, 25-45mm /-5 mu m. Flatness:0.3 mu m. Parallelism:(3L/75) mu m. L maximum measuring length. Measurement of Pitch Diameter: Pitch diameter E is given by the following formulae after taking the reading 'M' of micrometer by single wire method. 1.Whitworth (55) E (2M - D) - 3.16567d 0.96049P 2.Metric or unified (60) E (2M - D) - 3d 0.866023P. Where:M 1/2 (M'/0.4472 - 0.2361D). (5 flutes). E Pitch diameter.P Pitch of tap. D Diameter of tap.d diameter of wire.M' micrometer reading

Accuracy	+/-0.004mm
Measuring Range	10 - 25mm
Additional Features	Measures itch diameter of taps by the single-wire method
Graduations	0.010mm
Weight Each	280g
Includes	Box | Keys | Setting Standard
System of Measurement	Metric
MFR Part No.	114-102