No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

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

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: