Seiko SSC929 Owner Manual - Page 16

Tachymeter

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English TACHYMETER (for models with tachymeter scale on the dial) To measure the hourly average speed of a vehicle 1 Use the stopwatch to determine how many seconds it takes to go 1 km or 1 mile. 2 Tachymeter scale indicated by the STOPWATCH 1/ 5 -second hand gives the average speed per hour. Ex. 1 STOPWATCH 1/5- second hand: 40 seconds Tachymeter scale: "90" "90" (tachymeter scale figure) x 1 (km or mile) = 90 km/h or mph l 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 the STOPWATCH 1/5-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 30 To measure the hourly rate of operation 1 Use the stopwatch to measure Ex. 1 the time required to complete 1 job. 2 Tachymeter scale indicated by the STOPWATCH 1/ 5 -second hand gives the average number of jobs accomplished per hour. STOPWATCH 1/5second hand: 20 seconds Tachymeter scale: "180" "180" (tachymeter scale figure) x 1 job = 180 jobs/hour Ex. 2: If 15 jobs are completed in 20 seconds: "180" (tachymeter scale figure) x 15 jobs = 2700 jobs/hour 31 English

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English
English
30
31
TACHYMETER
(for models with tachymeter scale on the dial)
l
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.
Tachymeter scale indicated by
the STOPWATCH 1/5-second
hand gives the average speed
per hour.
Ex. 1
STOPWATCH
1/5- second
hand:
40 seconds
Tachymeter scale: "90"
“90” (tachymeter scale figure) x 1 (km or mile)
= 90 km/h or mph
"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
1
2
To measure the hourly rate of operation
Use the stopwatch to measure
the time required to complete 1
job.
1
Tachymeter scale indicated by
the STOPWATCH 1/5-second
hand gives the average number
of jobs accomplished per hour.
2
Ex. 1
STOPWATCH 1/5-
second hand:
20 seconds
Tachymeter scale: "180"
“180” (tachymeter scale figure) x 1 job
= 180 jobs/hour
Ex. 2:
If 15 jobs are completed in 20 seconds:
"180" (tachymeter scale figure) x 15 jobs = 2700 jobs/hour
Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or
miles and the STOPWATCH 1/5-second hand indicates “90” on tachymeter scale: