WTS Bulova Accutron Tuning Fork Watch

The watch uses a tuning fork as its prime moving element. It is a well understood physical principle that the faster your initial reference the more accurate your time keeping will be. In the 1950s the best mechanical watches could rely on a prime moving element with a frequency of around 2 Hz (That is two 'beats' per second). Max Hetzel an engineer employed by the Bulova Watch Company of Bienne Switzerland designed an electrically excited tuning fork movement with a a frequency of 360 Hz. Bulova claimed an accuracy of 2sec per day or 1 min per month. This was the only movement capable of the accuracy demanded by spaceflight. Accutrons were used as time references in many satellites and also to control some of the Apollo moon experiments.The Tuning Fork Movement is absolutely unique in operation emitting a distinctive hum and featuring a sweep seconds hand.

serviced half year ago at over 200usd

35mm excluding crown

218 tuning fork movement

ultra smoothest sweeping hand , no jerking at all.

all original hands , dial , ss case , crown , movement

everything is mint , one small mark on case at 2oclock

$300