Digital electronic indicator

摘要

An indicator is made to fit within American Gauge Design dimension requirements to be compatible with existing accessories for indicators and still have a spindle with a travel of about 1/2 inch cooperating with an electro-optical, digital electronic measurement and readout system. A coupling is secured to the inner end of the spindle and supports a ruled glass scale for movement with the spindle in an axially offset position to move relative to a reader assembly that is mounted in the housing. A connecting arm is secured to the coupling for movement in a region spaced from the scale, a lifter rod is arranged opposite the spindle, and a lifter arm is connected between the lifter rod and the connecting arm so that the lifter rod moves about one-half the distance of the spindle. The connecting arm also prevents rotation of the spindle to maintain the orientation of the scale relative to the reader assembly.