microinch

Millionth of inch

A microinch is one millionth of an inch, used to measure extremely small distances in precision engineering and manufacturing.

Surface roughness, the flatness of machined parts, and the thickness of coatings are typically specified in microinches: The bearing surface was polished to 8 microinches.

measurement

caliper

Tool measuring thickness or diameter

thickness · resolution · graduation · metrology · precision · tolerance · flatness · runout · parallelism · perpendicularity

unit

mil

Inch's tiny fraction

millimeter · imperial · conversion · RMS · Ra

machining

grinding

Molar action sometimes

turning · milling · boring · cutting · spindle · workpiece · CNC · lathe · mill · metalworking

tolerance

allowance

Fixed periodic payment

fit · press-fit · runout · straightness · datum · limit · variation · inspection · conformance

engineering

aerospace

Atmosphere plus outer void

seal · hydraulic · pneumatic · turbine · wafer · die · photolithography · lens · mold · tooling

Opposites
scale of measurement

microinchmile

5,280 feet

kilometer · light-year · parsec · astronomical unit · megameter

Family

inch, miniature, microscope, micro, microscopic, inched, inching, inchoate, micrometer

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Rated G