Angular dimensions are used for measuring and displaying inside and outside angles. These angles are measured in degrees (Figure 4.1C). Where greater accuracy is required, the degree is divided into 60 minutes and the minute into 60 seconds. For reference, a circle has 360 degrees. Inch and millimeter measurements both measure angles in degrees. Normally, angular dimensions are specified in decimal degrees, degrees and minutes, or degrees, minutes, and seconds (For example, 24.5°, 24° 30', 24° 30' 16"). When the angle is less than 1 degree, a leading zero should be used (for example, 0.5°, 0° 30').
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