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Tachymeter
Description: Allows one to compute speeds and machine outputs.
Examples of Use:
1) To calculate the speed of a car over a known distance press the top chronograph button when entering the fixed distance press it again when the fix distance. If the time elapsed is 45 seconds the second hand points to the figure 80 on the Tachy scale. If the fixed distance is a Kilometer then the car is traveling 80 kilometers per hour. If the distance covered is a mile, then the speed is indicated in Miles per hour.
2) To calculate the output of a machine, start the chronograph and count a set number of units made, at the end of this number stop the chronograph. If you counted to 1,000 and the second hand points to 75 on the Tachy ring, the machine's hourly output is 75 time 100 or 7,500 units per hour.