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 1965M Traditional External Micrometer has the following specification: Micrometer Range: 0-25mm.Measuring Faces: Flatness: 0.001mm, Parallelism: 0.003mm, Accuracy: 0.003mm.Resolution: 0.001mm.