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Tachymeter (for models with tachymeter scale), English – Seiko CAL. 7L22 User Manual

Page 11

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English

11

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

TACHYMETER
(for models with tachymeter scale)

To measure the hourly average speed of a vehicle

* Tachymeter scale can be used only when the time required is less than 60 seconds.

Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles

and STOPWATCH second hand indicates “90” on tachymeter scale:

“90” (tachymeter scale figure) x 2 (km or mile) = 180 km/h or mph

“90” (tachymeter scale figure) x 0.5 (km or mile) = 45 km/h or mph

U s e t h e s t o p w a t c h t o
d e t e r m i n e h o w m a n y
seconds it takes to go 1 km or
1 mile.

Tachymeter scale indicated
by STOPWATCH second hand
gives the average speed per
hour.

Ex. 1

STOPWATCH
second hand:
40 seconds

Tachymeter scale:
“90”

“90” (tachymeter scale figure) x 1 (km or mile)
= 90 km/h or mph

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