Minutes and Hours

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Figure 4.3-9 Unit Index
CURSOR HAIRLINE
The primary function of the cursor hairline is to input temperature into the CR-3 for
calculating true Air Speed (see chapter 4). Its secondary purpose is to help with
interpolation of any values derived from the inner and outer wheels.
Figure 4.3-10 Minutes to Hours
TIME
MINUTES AND HOURS
Both the outer and inner scales are the same. The outer scale can be referred to as the
DISTANCE scale and the inner scale called the TIME scale. In using the TIME scale, the
large numbers near the edge of the inner scale usually represent minutes. The floating
decimal concept still applies; for example the 15 value on the minute scale could represent
1.5, 15, or 150 minutes. Notice it DOES NOT, directly represent seconds. Note that the
value of 60 minutes has a special meaning; it equals one hour. Because it is an often-used
4.6-57

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