Example:
Known: Distance and Speed.
Required: Time.
A pilot wants to know how long it will
take to go 486 miles at a ground speed
on 156 miles per hour.
Solution:
On the Bezel scale set 156
opposite the MPH index on the fixed
scale. On the inner scale opposite 486
on the mobile scale read 187 minutes
(or 3 hours and 7 minutes).
4: CALCULATING GROUND SPEED
(2)
MPH INDEX
1 1
1 2