9 OPTO-ELECTRONIC SENSORS FOR TOOL MONITORING AND AUTOMATION, PROCESS MONITORS AND PUNCHING TOOL MONITORS FOR ASSEMBLY LINES, SELECTIVE ELECTROPLATING LINES, ENDLESS LOOPS, AND ROBOTICS; INSTRUMENTS FOR MEASURING AND SORTING, NAMELY, LIGHT BARRIERS, PROXIMITY SWITCHES, RING SENSORS, AND, FIBRE OPTIC SENSORS, IMAGE PROCESSORS FOR THE CONTROL OF STAMPING, AUTOMATED SORTERS FOR MASS-PRODUCED PIECE PARTS, AND ELECTRO-PNEUMATIC MINIMUM OILERS FOR ROTATING MACHINERY, TAPS, SAW BLADES AND SINGLE STROKE MACHINES