Can anyone identify this timer/stopwatch? Could it possibly date …
2024年5月9日 · Hence a stopwatch marked Lund Brothers and made by a Geneve maker seems to fit the above. About the patent: the only way to know if the patent corresponds, is to demount the stopwatch and look under the dial. The position of the crown in the patent drawings is only representative, as it is not part of the patent itself. Ciao View attachment 867140
Need help Identifying Elgin stopwatch timer | NAWCC Forums
2019年8月1日 · I would say it is an aircraft timer of some sort. Your math is close but this measures knots not MPH so the 12 (120) would be 138 mph and change and the 50 (500) would be 575 and change.
American Stopwatch Thread- show us your American ... - NAWCC …
2024年12月12日 · The 10 second A-8 ground speed timer beats 40 times / second. This 6 second timer either beats at a faster rate (50 beats/sec) or the gear train is modified so that the second sweep hand will complete one full revolution in 6 seconds. The stopwatch measures half the speed of sound in seawater in seconds.
Meylan Stopwatch Corp.? - NAWCC Forums
2021年6月28日 · Here are a couple of pics, the movement serial number is 4,118,152 and I am also showing the stamp on the inside of the case back. This case back at least snapped back reasonably easy, unlike the timer I bought two years ago in which I still have not secured the case back. Anyone out there had luck correcting hair Springs like this?
O.K. I Believe This One is a Very Unusual Gallet Stopwatch Timer
2017年2月7日 · Last week I posted a photo of what I thought may be a very unusual vintage Gallet Timer. It was an "Hour Decimal" stopwatch that a full revolution of the sweep hand takes only 36 seconds. [Representing one hundredth [.010] of an hour. [Or, 6/10 (.6) of a minute]. It's sub dial is divided...
Wright Bros 'Flyer' "The Sun" stopwatch from the ... - NAWCC …
2022年12月4日 · This stopwatch/timer was manufactured by the already well-established Girard Perregaux & Cie company who were known for their complex movement "Tourbillon with three gold bridges" patented in the USA in 1884, (and awarded a gold medal in 1889 at the Universal Exposition of Paris).
Anti-submarine stopwatch? - NAWCC Forums
2011年5月21日 · This little beauty recently came into the shop for repair, as far as I can make out its an Anti-submarine stopwatch. Under the serial number database its described as a military timer. I have a couple of technical queries; First the balance is running at …
Elgin A-8 Bomb timer - NAWCC Forums
2017年4月13日 · It is actually a ground navigation timer not a bomb timer. When flying over the ground you would start the timer at a known landmark then stop it at another some distance away. You can determine your ground speed that way. I have two A-8's. One was my father in laws who was an aircraft navigator and retired as a ltcol from the Air Force.
Camero Timer (Stopwatch) Swiss made? - NAWCC Forums
2021年12月1日 · I have this 30-second Swiss timer that has Lean & Jones Inc. on the case and movement. Does anyone have an instruction manual or original box for such a watch? The plastic crystal has a blue tint to it, is this common. Thanks, Brad Maisto, KY Floral #44 Secretary P. S. Does anyone know about when these were produced or sold to the public?
WWII Elgin Navy timer - NAWCC Forums
2019年11月30日 · The Elgin Timer is not really a stop watch in the standard sense. Stop watches stop and start the train and escapement, whereas the Elgin Timer's train and escapement run as long as it's wound. The stopping and starting of the hands is accomplished using what is essentially column wheel chronograph works under the dial.