Timex Intelligent Quartz Manual page 247

The following examples serve as a guide of how to use
the slide rule.
SPEED CALCULATION:
What speed is required to go 10 nautical miles in
15 minutes?
Known Factors: Distance: 10 nautical miles Time:
15 minutes
• Align "10" arrow on the outer ring with "15" on the
inner ring.
• The speed required can be found directly above the
"MPH" marking on the inner ring.
The answer: 40 nautical miles per hour
Time Calculation: How long will it take to go 10 nauti-
cal miles at a speed of 40 miles per hour?
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