An item specifically designed to test and/or monitor an electrical circuit and indicate its operating condition by means of a display, such as lamps or light emitting diodes. Examples of conditions being indicated are power on, no power, reversed polarity, open ground, open neutral, alternating current and/or direct current. It may or may not be used to indicate definite power line voltage ratings, such as 110, 220 and 440 volts. It is designed to be inserted in the circuit being tested. For items designed to indicate with out physical contact with the object being tested, see indicator, electrical potential. See also light, test, and voltmeter.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5920-00-399-7760
NSN 5990-01-272-4091
NSN 5965-00-309-4814
NSN 5990-00-146-3534
NSN 5998-01-447-4101
NSN 2925-01-120-8712
NSN 5945-00-721-5620
NSN 6685-01-519-9250
NSN 6620-00-313-2018
NSN 5905-01-507-7670
NSN 2925-00-311-0825
NSN 5935-01-257-1668