noun
- a unit of length equal to one millionth of an inch
Usage: technical; engineering
Examples
- The surface roughness was measured in microinches.
- The tolerance specification called for accuracy within 50 microinches.
- Modern machining can achieve precision to within a few microinches.
- The coating thickness was only 25 microinches.
- Engineers use microinches to measure extremely small distances.
- The part was manufactured to a tolerance of ±10 microinches.