Seiko SSB373 Owner Manual - Page 6

Security Lock Button Operation, Tachymeter

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English SECURITY LOCK BUTTON OPERATION (for models with security lock button) SECURITY LOCK OF PUSH-BUTTON A & B Locking A Unlocking Locking B Unlocking Unlocking the push-button - Turn Security Lock Button counterclockwise until you no longer feel the threads turning. - The button can be pushed in. Locking the push-button - Turn Security Lock Button clockwise until you no longer feel the threads turning. - The button cannot be pushed in. 10 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 STOPWATCH second hand gives the average speed per hour. Ex. 1 STOPWATCH 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 STOPWATCH 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 11 English

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11
10
English
English
SECURITY LOCK BUTTON OPERATION
(for models with security lock button)
Locking the push-button
-
Turn Security Lock Button clockwise until you no longer feel the threads turning.
- The button cannot be pushed in.
Unlocking the push-button
-
Turn Security Lock Button counterclockwise until you no longer feel the threads turning
.
- The button can be pushed in.
Locking
Unlocking
Locking
A
B
SECURITY LOCK OF PUSH-BUTTON A & B
Unlocking
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.
1
Tachymeter scale indicated
by STOPWATCH second hand
gives the average speed per
hour.
2
Ex. 1
STOPWATCH
second hand:
40 seconds
Tachymeter scale:
"90"
“90” (tachymeter scale figure) x 1 (km or mile)
= 90 km/h or mph
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:
"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