5340-12-305-0222

5930-01-407-3070 5930014073070 014073070 is a switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. excludes baroswitch; switch, pressure-thermostatic; and switch, sensitive.

5960-14-407-3070 5960144073070 144073070 is 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).

3020-00-407-3070 3020004073070 004073070 GEAR,SPUR

5955-99-407-3070 5955994073070 994073070 is an item which consists of a quartz crystal resonator(s), suitably mounted in a holder, quartz crystal.