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 5835-01-340-7722
NSN 6645-00-279-1777
NSN 5915-01-385-1866
NSN 6105-01-459-7902
NSN 6240-00-034-5909
NSN 6130-01-040-7113
NSN 5930-01-444-1835
NSN 2925-00-555-4578
NSN 6610-00-058-9527
NSN 6105-01-305-5662
NSN 5910-01-376-4607
NSN 5985-01-040-0903