Little Known Facts About Speedmaster Steel Chronograph Watch 311.33.42.30.01.001.
Speedmaster Steel Chronograph Watch 311.33.42.30.01.001
Tachymeter Tachymeter A tachymeter watch includes a function for measuring velocity. This is a chronograph using a graduated dial on which speed is usually read through in kilometres for each hour according to a a thousand metre length.
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