Hope someone will help me out with this dial
I just got it.
looks military that's why I'm posting here.
48 mm dial with 3 legs at 2,22 and 44 minutes.

#2 pics.

#3

Hello Peter, your dial belongs to an aircraft clock,the same spec as Waltham!
51A45A1-1 Elgin elapsed time clock dial for use in military aircraft , clock is 1 7/8 inch in diameter...
Waltham Precision Instrument, Co.Inc CLOCK, aircraftff, mechanical, 1 7/8" dialf, ELAPSED time MS28020LI. Stock No. Navy R88CO574-000-000. mfg part 22222-S-ET-12.
One has recently been sold on ebay here; Waltham elapsed time clock

thanks Werner