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.
HOW TO USE THE TACHYMETER
(For those models which include a tachymeter with a graduated dial)
B
Note: Some models have a dial with 12 graduations. To read, multiply the number shown by 5.
| Ex. “3” | → | “15” |
A | “6” | → | “30” |
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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 | |
B | using a maximum of 60 seconds as the standard. For | |
instance, if it takes 40 seconds to go one kilometer (or mile), | ||
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| look at “40” on the dial and the figure outside the “40” | |
| indicates 90 on the tachymeter scale. This means the | |
A | average speed of the automobile is 90 kilometers (or miles) | |
per hour. | ||
| 90 (40 seconds position) x 1 km = 90 Km/h (mph) |
