Special Features:

Azimuth indicator 4030132-902 modification kit, includes 1 each, ip-1310 nvis compatible tube and yolk assembly p/n 4030448-902, bezel gasket p/n 8530186, identification plate p/n 4015743-130, lacing tape and upgrade/checkout procedure

Properties:

An inclosure, including two or more electrodes, in which a flow of electrons may occur through a vacuum or a contained gas. The electronic conduction takes place either by means of electrons emitted from a cathode or by ionization of the contained gas. Includes phototubes (photoemissive type only), geiger-mueller tubes, traveling wave tubes, cathode ray tubes and microwave tubes (klystron, magnetron, or the like). Excludes items whose primary purpose is to produce light energy. Also excludes photoelectric cell; and semiconductor device (as modified).