The Moore & Wright 966 Series Traditional External Micrometer has a blue textured frame finish with tungsten carbide measuring faces. 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 a case.The 1966/2 Traditional External Micrometer has the following specification: Micrometer Range: 1-2in.Measuring Faces: Flatness: 0.00005in, Parallelism: 0.0001in, Accuracy: 0.0001in.Resolution: 0.001in.Additional Information:Micrometer Type: ExternalMetric/Imperial: ImperialMin Measurement (in): 1Max. Measurement (in): 2Graduation (in): 0.001