# How does the scale of a metric micrometer work?

Shop for Micrometers

Measurements provided by a micrometer are made up of a combination of values taken from the sleeve scale, the thimble scale and, on some micrometers, the vernier scale.

## Micrometer sleeve scale

The sleeve scale of a metric micrometer has a measuring range of 25mm.

It is graduated in millimetres and half millimetres.

The scale is numbered every 5mm.

## Micrometer thimble scale

The thimble scale has a measuring range of 0.5mm (the smallest value that can be measured on the sleeve scale).

It is divided into 50 increments, with each increment representing 0.01mm (0.5 ÷ 50 = 0.01).

The scale is numbered every 0.05mm.

## Micrometer vernier scale

Some also have a vernier scale on the sleeve, which provides the user with readings of even greater accuracy (to 0.001mm).

The vernier scale has a range of 0.01mm and is graduated in 10 increments, each of which represents 0.001mm.

The scale is numbered every 0.002mm.