Motorized micrometer comparator height gauge

Claim 1

A MOTORIZED MICROMETER HEIGHT GAUGE COMPRISING A BASE, A BARREL EXTENDING VERTICALLY FROM AND CARRIED ON SAID BASE, SAID BARREL HAVING BEARINGS IN EACH OF ITS UPPER AND LOWER ENDS, A PRECISION LEAD SCREW ROTATABLY CARRIED BY SAID BEARINGS, THREADS ON SAID SCREW, A NUT THREADED ON SAID SCREW THREADS, SAID BARREL HAVING A VERTICAL SLIT THEREIN, AN EXTERNAL INDICATOR ATTACHED TO SAID NUT THROUGH SAID VERTICAL SLIT FOR VERTICAL TRAVEL WITH SAID NUT, A MANUALLY OPERABLE VERNIER DIAL FIXEDLY SECURED TO SAID LEAD SCREW AT THE TOP THEREOF AND AT THE TOP OF SAID BARREL, COMPLEMENTARY CALIBRATIONS ON SAID DIAL AND THE ADJACENT EXTERNAL AREA OF SAID BARREL, A DIGITAL COUNTER MOUNTED ON SAID BASE, A GEAR TRAIN CONNECTING SAID LEAD SCREW TO SAID DIGITIAL COUNTER, A REVERSIBLE ELECTRIC MOTOR MOUNTED ON SAID BASE, ROTATION TRANSMISSION MEANS CONNECTING SAID MOTOR TO SAID LEAD SCREW, AN ELECTRIC CIRCUIT CONNECTED TO SAID MOTOR, A REVERSIBLE SWITCH CONTROL MEANS IN SAID CIRCUIT FOR OPERATING SAID MOTOR IN EITHER DIRECTION, A GEAR OF SAID GEAR TRAIN HAVING AN ANNULUS OF SPACED APART INDENTS THEREIN COMPLEMENTARY TO SAID DIAL AND BARREL CALIBRATIONS, A PLUNGER NORMALLY BIASED AGAINST SAID ANNULUS OF INDENTS, AND SOLENOID CONNECTED TO SAID PLUNGER, SAID REVERSIBLE CONTROL SWITCH MEANS ACTIVATING SAID SOLENOID TO RETRACT AND SAID MOTOR IS OPERATING.