Electrically digital display micrometer

DETAILED DESCRIPTION The present invention aims at a micrometer for electrical display of measured results which is constructed such that a tubular cavity is formed in the arm of a frame which movably supports the spindle and in this cavity a rotary encoder is housed without affecting its function as well as the function of the micrometer; and electrical parts are effectively assembled into the frame with easiness of maintenance.
Another aim of the present invention is to provide a micrometer designed such that the disc-like index scale and a slit disc are coaxially installed; a light-emitting element and a light-receiving element are disposed opposing each other via said index scale and said slit disc; and an electrical pulse signal can be issued through a relative rotation of said index scale and said slit disc.
Still another aim of the present invention is to provide a micrometer equipped with a large-scale integrated circuit for counting the pulse signals and figuring out the measured results.
Other features and advantages of this invention will become apparent from the following detailed description of concrete examples thereof taken with reference to the accompanying drawings.