English
HOW TO USE THE TACHYMETER
(for models with tachymeter scale on the dial)
To measure the hourly average speed of a vehicle
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Use the stopwatch to determine how many seconds it takes to go 1 km or 1 mile.
Tachymeter scale indicated by Second hand gives the average speed per hour.
Ex. 1
Tachymeter scale: “80”
Second hand: 45 seconds
“80” (tachymeter scale figure) x 1 (km or mile) = 80 km/h or mph
* Tachymeter scale can be used only when the time required is less than 60 seconds. If necessary,
22shorten the measuring distance.
