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. These 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 903M Internal Micrometer has the following specification: Range: 50-310mm.Head Range: 10mm.

Brand Name	Moore and Wright
Manufacturer Model No	903M
Type	Internal Micrometer
Certifications Met	BS959 Standards
Micrometer Type	Internal
Metric/Imperial	Metric
Min. Measurement (mm)	50
Max. Measurement (mm)	310
Graduation (mm)	0.01
Range	50-310mm
Head Range	10mm