Citizen 0S80 Instructions Manual page 3

3. Others
* Measurement of time rate
The unit(gate) time of measurement must be set at "10 sec." or integer fold
value of 10 sec. owing to the DFC system, and the measurement must be
performed in the form of complete watch.
* Marking on movement
* Typical clearance
* Interchangeability of appearance components:
Dial Foot positon & the diameter
Date window position
Hands
* TACHYMETER
The tachymeter is the device which measures the speed of an automobile. Knowing is how
many seconds the car covers a distance of 1km, the meter can measure the approximate
average speed per hour during a journey (up to the maxinum measureable range of
tachymeter is 60 seconds.)
If the chronograph is started at the same time as measurement, and stopped after 1 km,
the average speed per hour can be determined according to the position of the second
hand. If the car covers the distance of 1km in 45second, the average hourly speed during
the journey will be about 80 km.
JAPAN
MIYOTA CO.
(CAL. NO.)
NO JEWELS
Mov't - Caseback
Mov't - Piezo electro
Thickness of piezo incl. stick-on portion
* Be sure PIEZO should be stuck on case back firmly.
Top of hands - Glass
* depending and subject to the glass and case structure, and hand length
REMARKS
*1 :Modificatrion of center hole diameter and hole for alrarm ON/OFF indicator" required.
*2 : "Alarm ON/OFF indicatior" and "Alarm time indicator" required.
CAL. 0S80
same as Cal. 0S series*1
same as Cal. 0S10/60
same as Cal. 0S series*2
minimum 550 μ
minimum 300 μ
minimum 250 μ
300 - 400 μ *