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English, Ex. 1 – Seiko CAL. 7L22 User Manual

Page 12

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English

12

60

TACHYM

ETER

50

0

40

0

30

0

2

5

0

2

0

0

18

0

16

0

140

12

0

10

0

90

8

0

75

70

65

To measure the hourly rate of operation

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
b y S T O P W A T C H s e c o n d
h a n d g i v e s t h e a v e r a g e
number of jobs accomplished
per hour.

STOPWATCH
second hand:
20 seconds

Tachymeter scale: “180”

“180” (tachymeter scale figure) x 1 job
= 180 jobs/hour

Ex. 1

1

2

Ex. 2: If 15 jobs are completed in 20 seconds:

“180” (tachymeter scale figure) x 15 jobs = 2700 jobs/hour