Option 00a adds male to male and female to female adapter
An item that can generate a fundamental frequency with a high degree of accuracy. Harmonics of this fundamental are then used as a reference point for checking throughout the radio spectrum. The standard may be stable crystal oscillator, noncrystal oscillator, tuning fork, atomic beam, molecular beam, gas cell, quantum mechanical resonator, or the like.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5915-00-269-9252
NSN 5930-00-518-7278
NSN 6610-01-381-3181
NSN 6150-01-146-3462
NSN 6685-00-915-5601
NSN 5835-00-554-0399
NSN 5950-00-253-5198
NSN 6150-01-218-4507
NSN 7035-00-523-7492
NSN 5925-00-666-4753
NSN 6320-01-320-3305
NSN 5855-00-151-3853