perfect used condition.
a few very wispy cosmetic marks around case only.
original glass perfect condition.
All parts original, no any changed parts
57 mm without crown,
77 mm with crown
Three body circular nickel-plated case, lobed rotating bezel with arrow indicator, crown with start, return and reset functions, safety lock system and quick-activating lever, stop pusher at 2 o’clock, hinged lugs, snap on caseback, n. 155416.
Black dial signed “Cronografo a ritorno Leonidas”, altitude indication with luminous Arabic markers from 5 to 60 hectometre (hm), outer 30-unit divisions with 1/5th second fractions. Blued and luminous arrow hand.
Manual winding 19-3/4’’’ lignes movement, gilded, 15 jewels, lateral lever escapement, monometallic balance, flat hairspring, column wheel system for the chronograph.
Bomb Timers "Countdown Chronographs"
Planes were used to drop bombs for the first time in World War One. The certainty of hitting a target from different heights and at different speeds could no longer be left to the "feel" of the pilot. This led to the construction of various indicators, view finding arrangements and stopwatches. The most significant characteristic of these stopwatches is that they reverse direction after a second push of the activator button (`count-down` or `ritorno` function).
will post to worldwide with registered/insured post
- Military Bombardier Pilot Bomb Timers Countdown
- Numer referencyjny
- Cronografo A Ritorno Chronograph- 57mm Oversize
- ręcznie nakręcany
- Materiał obudowy
- Rodzaj przedmiotu
- Przesyłka z zadeklarowaną wartością
- Używany z niewielkimi lub bez śladów użytkowania