To measure the hourly rate of operation
English
1
2
U s e t h e s t o p w a t c h t o measure the time required to complete 1 job.
Tachymeter scale indicated by STOPWATCH second hand gives the average number of jobs accomplished per hour.
Ex. 1
65
70
75
0 8
0
9
0 |
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0 | |
| 1 |
60 | TACH |
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| YM |
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| ET |
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| ER | 5 |
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| 0 |
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| 0 |
4 0 0
3 | ||
| 0 | |
|
| 0 |
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| 2 |
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| 5 |
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| 0 |
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| 2 |
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| 0 |
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| 0 |
0 | 8 | 1 |
| ||
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| |
6 | 1 |
| |
0 |
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| 1 |
4 | |
0 |
|
021
STOPWATCH second hand: 20 seconds
Tachymeter scale: “180”
“180” (tachymeter scale figure) x 1 job = 180 jobs/hour
Ex. 2: If 15 jobs are completed in 20 seconds:
“180” (tachymeter scale figure) x 15 jobs = 2700 jobs/hour
12
