Security Lock Button Operation; Tachymeter - Seiko 8T67 Instructions Manual

SECURITY LOCK BUTTON OPERATION

(for models with security lock button)
SECURITY LOCK OF PUSH-BUTTON A & B
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.
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Locking
A
Unlocking
Locking
B
Unlocking

TACHYMETER

(for models with tachymeter scale on the dial)
To measure the hourly average speed of a vehicle
U s e t h e s t o p w a t c h t o
1
determine how many seconds
it takes to go 1 km or 1 mile.
2 Ta chy me ter s c ale indic a te d
by STOPWATCH second hand
gives the average speed per
hour.
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
Ex. 1
STOPWATCH
second hand:
40 seconds
Tachymeter scale:
"90"
"90" (tachymeter scale figure) x 1 (km or mile)
= 90 km/h or mph
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