BENDIX HSI HORIZONTAL SITUATION DISPLAY IN-831 A P/N 4000172-8513 #4959 Click here to purchase or contact the seller of this item on eBay
Current Price: 488.00 USD

ser # 4959  FT. Lauderdale, FLA

Looks like an interesting gauge to me, possibly something you'd find in jet airliners.

I recently updated this listing to allow offers.

If I find some matching connectors, would that be of interest to anybody?

Thank you for your interest.

From my dad's vast collection of Arcamex Avionics panel gear