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The micrometer (also known as the micrometer) is a precision length measurement tool, divided into mechanical and electronic two categories, with it to measure the length can be accurate to 0.01

author：Texas CNC master little king

The micrometer (also known as the micrometer) is a precision length measurement tool, divided into mechanical and electronic two categories, with it to measure the length can be accurate to 0.01 mm, the measurement range is several centimeters.

The first such measuring tool was invented by French inventor Jean Laurent Palmer and patented in 1848 as a "thread caliper with a circular vernier frame", which american engineers Joseph R. Brown and Lucian Sharpe applied to the mechanical field.

The micrometer (also known as the micrometer) is a precision length measurement tool, divided into mechanical and electronic two categories, with it to measure the length can be accurate to 0.01
Caliper inventor engineer first range spiral screw thread field joseph Palm
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