Reference data, f420c manual, table 6, pg 17
No other part numbers with same form, fit, and function found.
Classification: Surveying, hydrographic, oceanographic, hydrological or meteorological instruments and appliances, excluding compasses and rangefinders, nesoi
NSN 6150-01-172-7903
NSN 5990-01-502-8209
NSN 5855-01-453-1549
NSN 6645-00-171-9639
NSN 2925-01-164-9579
NSN 5985-01-261-1669
NSN 5835-00-617-3578
NSN 6685-01-315-1860
NSN 6610-00-176-5486
NSN 6645-01-525-7493
NSN 6150-01-042-4942
NSN 5835-01-355-3654