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 5910-01-381-2493
NSN 4140-00-296-9695
NSN 5905-01-495-6915
NSN 5985-00-204-4716
NSN 6240-01-018-4895
NSN 6105-01-118-8537
NSN 5996-01-322-4838
NSN 6145-01-547-6651
NSN 5960-01-491-2993
NSN 6220-00-686-5328
NSN 5855-00-177-3529
NSN 6620-01-463-1373