Citizen ad2992-59p Reference Guide

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English
How to use  the motor sports function
4-2. 
[Calculation of time needed to reach a set distance]
Q : 
How long does it take for a vehicle travelling at a speed of 80km to travel 400km? 
A : 
Align 80 of the outer scale with the SPEED INDEX“” of the inner scale.
Result: 5 Hours (5.00) of the inner scale correspondes to 40 of the outer scale.
[Calculation of speed]
Q : 
What is the speed of a vehicle travelling a distance of 180km for period 2 hours   
and 30 minutes? 
A : 
Align 18 of the outer scale with 2:30 of the inner scale.
Result: 72km can be determined by comparing the SPEED INDEX “” of the inner 
scale and corresponding outer scale indications.