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Dimension line — a thin, solid line that shows the extent and direction of a dimension. Arrows — symbols at the ends of dimension lines showing the limits of the dimension, leaders, and cutting plane lines. Extension line — a thin, solid line perpendicular to a dimension line, indicating which feature is associated with the dimension.
Usually, the dimension line meets the extension line at right angles. There should be a gap of about 1 / 16″ where the extension line would meet the outline of the object, and the extension line should go beyond the outermost arrowhead approximately 1 /8″. Also, there should be not gaps where extension lines cross.
The numerical value representing the measurement is placed in line with the dimension line. See: Rules for Dimension Lines. Extension Lines. Extension lines are used to indicate the boundaries of a feature to which a dimension is applied. They extend from the edges of the object or feature being measured and intersect with the dimension lines ...
However, if extension lines cross dimension lines through the arrowheads, the extension line may be broken. 9. Dimensions should be at least 3/8" (10 mm) from the object outline, then equally spaced at least 1/4" (6 mm) apart. A continuous series of dimensions should be aligned rather than staggered.
Mar 20, 2021 · Usually, the dimension line meets the extension line at right angles. There should be a gap of about 1 / 16″ where the extension line would meet the outline of the object, and the extension line should go beyond the outermost arrowhead approximately 1 /8″. Also, there should be not gaps where extension lines cross.
May 29, 2023 · Dimension line. Light. Extension lines are small lines that extend outward from an object or feature. Dimension lines span between the extension lines with arrowheads and a given dimension. Leader line. Light. Unbroken line usually drawn at an angle, often with a “dogleg” and an arrowhead. A dot is used in place.
Extension lines are used to connect the dimension line to the visible edges of the feature being dimensioned. You should not dimension to hidden lines: use a section view to make hidden lines visible, or use a hole callout if possible. Size dimensions. Size dimensions indicate the size of basic shapes like arcs, prisms, cylinders, and holes.
