Microfinish conversion - Micrometers (?) to microinches?

Proud Liberal

Quite Involved in Discussions
Sorry if this is the wrong forum for this question.

What's the converion from micrometers (?) to microinches? The specification is 1.27 to 3.31 in metric.
 
B

Bill Ryan - 2007

Proud Liberal said:
Sorry if this is the wrong forum for this question.

What's the converion from micrometers (?) to microinches? The specification is 1.27 to 3.31 in metric.
1 microinch = 0.0254 micrometer
In microinch your specification would be roughly 50/130 (there are rounding errors!)
 
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Al Rosen

Leader
Super Moderator
Proud Liberal said:
Sorry if this is the wrong forum for this question.

What's the converion from micrometers (?) to microinches? The specification is 1.27 to 3.31 in metric.
There are 25.4 mm/inch, so I think there are 0.0254 micrometer per microinch.
 
J

JerryStem

We measure plating thicknesses in microinches and microns. I usually convert by:

microinches * .0254 = microns

microns / .0254 = microinches

Also, 1 micron = roughly 40u" but you get a small rounding error. It's just convenient for quick checks sometimes without a calculator...

Jerry
:magic:
 
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