Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles and Second hand indicates “80” on tachymeter scale:
“80” (tachymeter scale figure) x 2 (km or mile) = 160 km/h or mph “80” (tachymeter scale figure) x 0.5 (km or mile) = 40 km/h or mph
English
To measure the hourly rate of operation
1Use the stopwatch to measure the time required to complete 1 job.
2Tachymeter scale indicated by Second hand gives the average number of jobs accomplished per hour.
Ex. 2: If 15 jobs are completed in 12 seconds:
“300” (tachymeter scale figure) x 15 jobs = 4500 jobs/hour
Ex. 1
Tachymeter scale: “300”
Second hand: 12 seconds
“300” (tachymeter scale figure) x 1 job = 300 jobs/hour
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