WW2 US MILITARY WRIST COMPASS BY THE WALTHAM WATCH COMPANY
Many describe this compass as a WW2 pilots wrist compass which could be true however it was used by all branches of the US military, they are however considered scarce.
This example is in excellent condition apart from a tear in the strap as shown in the images which could be sympathetically repaired. The compass itsel is in very good condition showing no signs of the common stress fractures on the glass.