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Percentage
Task: 25% of 80
To calculate a percentage of any number (e.g. 80), align it with the index
number (10 with a red arrow) on the inner bezel. Once the bezels are
correctly positioned, the inner bezel shows the percentage and the outer
bezel shows the product of the sum. Example: 25% of 80 = 20
Rule of Three
If the exchange rate between the Swiss Franc and the US dollar is 1 CHF
= $1.1, align the number 11 on the outer bezel with the index number (10
with a red arrow) on the inner bezel. The inner bezel then shows the amount
in Swiss francs and the outer bezel gives the amount in US dollars. This
makes it easy to convert any amount between currencies.
Speed
Task: What is the speed of travel to cover 50 nautical miles in 25 minutes?
Align the distance (50) on the outer rotating bezel with the time in minutes
(25) on the inner bezel. The relative speed is shown under “KTS”: 120 knots
You can convert other units of measurement in the same way as above,
using the same combinations.
Task: What is the speed of travel to cover 50 km in 25 minutes?
Align the distance (50) on the outer rotating bezel with the time in minutes
(25) on the inner bezel. The relative speed is shown under “KTS”: 120 km/h
ENGLISH
Task: What is the speed of travel to cover 50 terrestrial miles in 25 minutes?
Align the distance (50) on the outer rotating bezel with the time in minutes
(25) on the inner bezel. The relative speed is shown under “KTS”: 120 mph
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