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Coordinate Dimensions

In one sentence: Creates baseline ordinate dimensions — all features measured from a single datum — so tolerance does not accumulate across the drawing.

Overview

Workbench: TechDraw
Menu: TechDraw → Format/Organize Dimensions

Three tools:

Tool Description
Create Horizontal Coordinate Dimension Baseline ordinate — all measured from one datum
Create Vertical Coordinate Dimension Vertical baseline ordinate
Create Oblique Coordinate Dimension Oblique baseline ordinate

Coordinate dimensions (ordinate dimensioning) measure all features from a single datum baseline. Preferred for CNC machined parts because each feature is measured independently — there is no accumulation of tolerance errors as in chain dimensions.

Step-by-step

  1. Select the datum vertex first, then all other vertices in order.
  2. Choose Create Horizontal Coordinate Dimension.
  3. The datum is automatically assigned zero; all other dimensions measure from it.

See also