Projecting continuous 24 mm wide parallel beam to reflector, ParCon ZADM 034I analog optical line sensor permits edge and width detection to 1.0 mm. With measuring frequency greater than 1 kHz, unit measures metallic and non-metallic objects to resolution of 0.1 mm. User can program minimum object size using push button teach-in process. Housed in 67 x 34 x 16.6 mm package, sensor can control and