32
TACHYMETER
[for models with tachymeter scale on the dial]
ILMYM92
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:
[ Ex. 1 ]
1.
Use the stopwatch to determine
how many seconds it takes to go 1
km or 1 mile.
2.
Tachymeter scale indicated by
STOPWATCH second hand gives
the average speed per hour.
To measure the hourly average speed of a vehicle
STOPWATCH
second hand:
40 seconds
Tachymeter
scale: “90”
“90” (tachymeter scale figure) x 1 (km or mile) =
90 km/h or mph
33
ILMYM92
To measure the hourly rate of operation
[ Ex. 1 ]
1.
Use the stopwatch to measure
the time required to complete 1 job.
2.
Tachymeter scale indicated by
STOPWATCH second hand gives
the average number of jobs
accomplished per hour.
“180” (tachymeter scale figure) x 1 job
=
180 jobs/hour
“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
STOPWATCH
second hand:
20 seconds
Tachymeter
scale: “180”
Ex. 2: If 15 jobs are completed in 20 seconds:
“180” (tachymeter scale figure) x 15 jobs =
2700 jobs/hour
ESPAÑOL
ITALIANO
FRANÇAIS
DEUTSCH
ENGLISH
