Window glass; wt. 10 to 15 oz; model 461-c
No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 6610-01-375-1527
NSN 6645-00-960-6594
NSN 5920-00-810-5275
NSN 5960-01-413-3877
NSN 5855-01-249-0717
NSN 5920-01-146-4325
NSN 5960-01-089-8155
NSN 2925-00-684-7708
NSN 5915-00-489-4646
NSN 5930-00-517-1514
NSN 5915-01-099-7064
NSN 5835-01-062-4213