Appearances can sometimes be deceptive. At first glance, Instrument de Vitesse does not appear to be a classic chronograph. With its three central hands, it looks like a watch with three hands, but the tachymeter scale running around the outer edge of the dial reveals its chronometric function. For this is a chronograph presented in its purest expression, dedicated to timing short bursts – a measuring instrument designed to take average speed readings over a maximum of 60 seconds. This, in turn, casts new light on the crown, which also acts as the chronograph’s single push-piece to set the slender centre seconds hand in motion. Released in two series of 25 timepieces, Instrument de Vitesse is available with a steel case measuring 39 mm in diameter and just 9.27 mm thick.