Stopwatch with pace performance rating

Stopwatch was the first method to determine standard times from performance measurement.   This method demands a high experience from the analyst to evaluate the pace of the operator because time measurements with a clock are in direct relation with the performance of the worker. Tempo is evaluated by means of tempo scales to calibrate the measurement.   Charles Bedaux introduced in the twenties the first tempo scale which was based on a normal performance rate of 4,5 Km per hour walking.  Initially pace was calibrated on walking and not on manual labour.   In the Unites States the tempo scale was calibrated on 3 miles per hour walking which is 4,8 km per hour because 4,5 km per hour is not a rounded number in miles.   This is the reason why normal work performances are 7% higher in the U.S. than in Europe. Tempo evaluation by means of tempo scales is not a straight forward matter.   In the early days every company had there own personel who could evaluate the pace of operators and these persons where calibrated on regular intervals because after some time the analyst started drifting from the standard.   Today this expertise has almost disappeared because time study engineers are more broadly focused and less motivated to dedicate there activities  to one discipline. The analyst must be able to recognise any pace which is in practise not a evident matter as most people are not able to simulate the reference pace or the normal pace in the applied tempo scale.  Vrex TempoTimer and Vrex Explorer will help you to judge pace thanks to the use of precalibrated movies. TempoTimer can simulate any work performance on the fly due to tempo regulatable films.  From now on the analyst is capable without any knowledge of tempo to preview any pace on screen and compare with the actual work. Engineers don't have to memorise different  tempos to compare as everything is presented in the software.