Orthographic Projections, Continued
Isometric
dimensioning
Isometric dimensions are similar to dimensions in other types of projections.
All dimension lines, extension lines, and arrowheads must lie in the planes of
the object to which they apply. Place dimensions outside the object outline.
Align dimensions and notes shown with leaders to the bottom of the drawing.
Notes without leaders should also be aligned with the bottom of the drawing.
You may use the aligned or unidirectional system of dimensioning.
Select
one method of dimensioning and use whole and fractional numbers, decimals,
or metric units of measure. Remain consistent throughout the drawing.
Figure 6-20 shows isometric dimensioning.
Figure 6-20.—Isometric dimensioning.
Continued on next page
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