The 1815 RATTRAPANTE is an expert example of short-time measurements. Additionally, the peripheral scale allows average speeds to be determined. If a chronograph is used to measure the time it takes to travel exactly 1 kilometre, the chrono hand will indicate the average speed on the tachometer scale [km/h]. This circular scale for speed measurements allows average speeds to be determined in a range of 70 to 400 kilometres per hour, over a distance of 1,000 metres. This function can be used to determine the average speed of a car. A true masterpiece with the capability to stop and measure traffic. #alangesoehne #lange1815 #1815rattrapante #higheststandards #timepieceperfection