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Note: Some models have a dial with 12 graduations. To
read, multiply the number shown by 5.
Ex. “3” → “15”
“6” → “30”
Note: When measuring a long period of time, press “A” to
return the STOPWATCH to the CALENDAR or TIME display
after the stopwatch starts. This will prevent any possible
mistaken operation.
(For those models which include a tachymeter with a graduated
dial)
HOW TO USE THE TACHYMETER
First, press button A to show stopwatch display.
Press button B to start and stop.
Set “60” on the rotating bezel to the 12 o’clock position.
The tachymeter can be used for the following purpose.
(1) To measure the hourly average speed of a vehicle with the
stopwatch display to determine how many seconds it takes
to go one kilometer (or mile).
Ex. 1)
The tachymeter scale gives the average speed per hour
using a maximum of 60 seconds as the standard. For
instance, if it takes 40 seconds to go one kilometer (or mile),
look at “40” on the dial and the figure outside the “40”
indicates 90 on the tachymeter scale. This means the
average speed of the automobile is 90 kilometers (or miles)
per hour.
90 (40 seconds position) x 1 km = 90 Km/h (mph)
B
A
B
A