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English
English
TACHYMETER
(for models with tachymeter scale on the dial)
Tachymeter scale can be used only when the time required is less than 60 seconds.
To measure the hourly average speed of a vehicle
Use the stopwatch to determine
how many seconds it takes to go
1 km or 1 mile.
1
Tachymeter scale indicated by
the stopwatch second hand gives
the average speed per hour.
2
Ex. 1
STOPWATCH
second hand:
40 seconds
Tachymeter scale: “90”
“90” (tachymeter scale figure) x 1 (km or mile)
= 90 km/h or mph
Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles
and the 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
Split time measurement
A
START
SPLIT
A
STOP
RESET
B
○
○
○
○
B
B
* Measurement and release of split time can be repeated by pressing button B.
SPLIT
RELEASE
Measurement of two competitors
A
START
B
RESET
B
B
A
FINISH TIME
OF 1ST
COMPETITOR
2ND
COMPETITOR
FINISHES
FINISH TIME
OF 2ND
COMPETITOR
