A circular plate having concentric rings, each with a different number of dark segments, closed sectors, or holes. When the circular plate is placed on a rotating shaft and illuminated with a known frequency from a flashing discharge tube, it will indicate the instantaneous speed of the rotating object.
Classification: Parts and accessories of articles of schedule b subheading 9030, nesoi
NSN 6150-01-369-0293
NSN 6110-01-449-0150
NSN 6145-01-107-7365
NSN 6650-00-981-9501
NSN 2925-00-314-0252
NSN 6685-01-453-2222
NSN 5910-01-245-6965
NSN 5910-01-292-8830
NSN 6220-01-541-5421
NSN 5915-00-076-0129
NSN 5998-01-092-4189
NSN 5975-01-495-0813