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Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
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Converting microinches AA Ra to micrometers Ra
Can some one tell me how to convert Ra microinches AA to micrometers. I have already figured out it is not as simple as using 25.4 mm = 1 inch because it is an arithmetic average. An equation of sorts would help me out heaps.
M Hogan- Melbourne
2002
First of two simultaneous responses --
Converting an average is no different than converting a measurement. Just divide microinches by 40 and you obtain the micrometers.
Giovanni M. Ciriani- Altavilla, VI, Italy
2002
Second of two simultaneous responses --
Dear Mr Hogan,
Perhaps this can help you: Ra in micrometers = 1/40 Ra in microinches.
Kind regards,
Sjamp van Esch
- Eindhoven, The Netherlands
2002
2002
MR.HOGAN
CONSIDER 39.37 (40.00) INCH = 1 METER
40 MICRO INCHES = 1 MICROMETER.
IF Ra VALUE IS 100 MICRO INCHES 100/40 =2.5 IN MICROMETER.
M.MUTHU RAMALINGAM- Bangalore - INDIA
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