What are Dimensions: The purpose of dimensions is to show the size and location for the features shown.
Why Use Dimensions: To ensure that the part made is the part you asked for.
Extension lines extend from to dimensions
Leaders cannot be vetical or horizontal lines, may be mistanken as the object.
Conversions:
Metric:
1" = 2.54cm
1" = 25.4mm
Imperial:
1' = 12"
196 cm = 6' 5"
1km = 1000m = 10000 dm = 100000cm = 1.0 x 10^5cm
Two Methods: Alligned and unidirectional.
-Do not place dimensions on the object
-Do not dimension to hidden lines
-Leaders should not be drawn at horizontal or vertical angles
- Complete circles are dimensions with diameters
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