Bearing Distance Heading Indicator ID-663 B/U US Navy UH-1, SH-46, A4, SH-3
This offer is for a Bearing Distance Heading Indicator (BDHI) type ID-663 B/U as used in A4 Skyhawk Fighter, UH-1 Bell Huey, SH-3 Sea King, and CH-46 Sea Knight Helicopters according to US Navy documentation on file. Has a service label from NARF PNCLA (US Naval Air Rework Facility, Pensacola FL) dated Q1-1981. Measures 3.25in diameter and ~8in deep.
It is in decent condition given its age. The dial markings are clear and the glass and case are intact.