E6B Flight Computer Bezel Instructions - Chase-durer Trident FCX Operation Manual

Tachymetre Scale (continued)
of a nautical mile, the actual answer is 1/10 of 100 or 10
knots, which is 10 nautical miles per hour.
If you are measuring the speed of a fast fighter plane, you
will need to use a longer distance such as 10 kilometers. If
it takes the fighter plane 10 seconds to travel the distance
of 10 kilometer the Tachymetre scale gives an answer of
360 units which translates into 3600 km/hour (10x360).
You can also use the Tachymetre scale to measure gas
consumption. Suppose it took 50 seconds to burn up a
gallon of gasoline. Reading the Tachymetre scale shows that
you are burning 72 gallons of gasoline per hour.
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E6B Flight Computer Bezel Instructions

The flight computer is based on the principle of the slide rule.
The unit of measurement is the base 10 logarithms (log10).
These instructions cover only the basics of using the E6B
Flight Computer Bezel/slide rule. A more complete description
may be found in your public library.
How to read the scale
The most important technique to master is reading the scale.
The numbered tick marks can represent a range of values.
For example, on the scale on the face of the watch, the
numeral 30 to the left of the letters "NAUT" can represent
30, or 300 or 3000 or 3.0. The nine tick marks between the
30 and 35 each represent 1/10 of the distance between 30
and 35, or 300 and 350, or 3000 and 3500, or 3.0 and 3.5.
So for 3.0 and 3.5 each one of the tick marks represents .05;
For 30 and 35, 0.5; for 300 and 350, 5; for 3000 and 3500,
50. You can see it is important that you keep track of the
range that each interval represents.
How to use the E6B Flight Computer Bezel
When doing calculations, the turning bezel will represent the
time and the face/dial the units (distance, pounds, gallons,
etc.)
• Let's try an example:
You're in your car on the freeway traveling at 60 miles-per-
hour. You've been traveling for 2 1/2 hours. How far have
you gone?
• Solution:
Turn the bezel so that the numeral 10 on the bezel (which
represents 1 hour) is directly over the "60" on the face at
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