FLAMAN Tachometer made by Ets VAUCANSON

Manufactured by Ets VAUCANSON, this FLAMAN recording tachometer, named after its creator, Eugène Flaman (1842-1935), engineer of the French Railroads from 1866 to 1908, controlled and recorded on a paper roll the speed of all the locomotives of the French railway park, until the 1990s. This device was fitted in the dynamometer car used to measure and record the speed of British LNER Class A4 4468 Mallard's during its speed record in July 1938.

It is better known as "the spy".

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