The Moore & Wright Traditional External Micrometer has a blue textured frame finish with tungsten carbide measuring faces and a tapered bow frame. The 'speeder' type ratchet, locking lever and adjusting key make this micrometer easy to use. It has a 6.5mm spindle diameter. The micrometers are manufactured to BS870, DIN 863/1, ISO 361 standards. Supplied in plastic pocket case.The 1965 Traditional External Micrometer has the following specification: Micrometer Range: 0-1in. Measuring Faces: Flatness: 0.00005in, Parallelism: 0.0001in, Accuracy: 0.0001in.Resolution: 0.001in.Additional Information:Micrometer Type: ExternalMetric/Imperial: ImperialMin. Measurement (mm): 0Min Measurement (in): 0Max. Measurement (in): 1Graduation (in): 0.001