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Wakmann is Breitling’s importer in the USA, sometimes the same machine is marketed by both companies. Both models are from the decades of the 50s and the 60s, and meet all the requirements to be considered A-11 by the USAF.

The movement made by LEMANIA has 7 jewels and can be winded up for 8 days. They were used, and are still used in USAF planes and in general and sport aviation.

These two clocks from the AOPA ( Aircraft Owner and Pilot Association) share the same machine with the necessary variations to show on one of them a 12 hour dial, and on the other one, a 24 hour dial.

The Z-timer, has a red hand to indicate the time of a second time zone. Normally the universal time, or Zulu, which is the time marked by the Greenwich meridian ( Greenwich Mean Time), it is the one used in aviation

   

WAKMAN A-13

This is the airplane clock from the Cold War age, the military specifications led to the creation of only one timer clock for the whole Department of Defense, all the US airplanes in this period were equipped with this clock.

All this clocks made under this specifications and requirements, such as having independent chronograph, having a minimum of 15 jewels, at least power for 8 days, or for example, having a variation of 75 seconds in 6 hours at 35 degrees Celsius and many more specifications, are known after the name of A-13.

Wakmann  uses for   its  A-13   model a  swis  movement  Lemania 7546  with   17 jewels. This clock as the A-13 by Waltham could be found in all US cold war planes from  U-2  to  C-130  Hercules,  and of course in  the F-4 PANTHOM
   

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