longitudinal and angle measuring apparatus; namely, linear, rotary and angle encoders; electronic apparatus that provide digital readouts of displacement and machine slide position valves; numerical controls, precision scales, graduated measuring plates, scales and parts therefor

Apparatus and instruments, namely, optical, inductive and capacitive sensors, electronic actuators for controlling, regulating, measuring and monitoring levels and flow of molten metal; computer programs for controlling, regulating, measuring and monitoring levels and flow of molten metal

OPTICAL GAGES