R.A.F. Navigator\'s Stopwatch MK.III (Boxed)
Stores Ref. 6B/117. White metal case, approx. 5cm diameter. White dial with non-luminous Arabic numerals. Keyless winding type with an 8-hour running period from fully wound. The chronograph action is controlled by the winding knob. Successive pressings of the knob start and stop the escapement, and reset the minute and second hands to the position shown in the photos. The design and construction of the mechanism are such that the second hand should indicate correctly to one fifth of a second, and that the starting and stopping errors should not exceed one fifth of a second. The watch is in very good used condition with only minor case wear and light marking of the dial. Nicely engraved Air Ministry King\'s Crown markings to the rear. The watch has a 1939 date code whilst the issue box is dated 1940 suggesting that although correct did not originate together. Stock code C15310.