The Moore & Wright 900 Series Internal Micrometers comprise of a measuring head, a set of extension rods and a spacing collar to facilitate alternative measuring ranges. The smaller models (901, 902 & 903) have detachable extension handles.

All models supplied in a fitted case.

These 900 Series Internal Micrometers conform to BS959 Standards.

The Moore & Wright Internal Micrometer 901 Internal Micrometer has the following specification:

Range: 1-2in.
Head Range: 0.25in.