Workshop micrometer for the blind (no. 412/62), by Moore and Wright, Sheffield, South Yorkshire, England, 1950-1952. The Workshop micrometer for the blind (no. 412/62) is a standard micrometer, modified by the addition of an aluminium drum of geared serrated discs with braille characters: developed in 1951, in conjunction with the National Institute for the Blind.

Workshop micrometer for the blind, no. 412/62 made by Moore and Wright, being a standard micrometer modified by the addition of an aluminium drum of geared serated discs with braille characters; developed circa 1951 in conjunction with the National Institute for the Blind. Housed in a wooden box.