2004
Table Of Contents
- Contents
- Chapter 1 - Find the Information You Need
- Part 1 - The User Interface
- Part 2 - Start, Organize, and Save a Drawing
- Part 3 - Control the Drawing Views
- Part 4 - Create and Modify Objects
- Chapter 14 - Control the Properties of Objects
- Chapter 15 - Use Precision Tools
- Chapter 16 - Draw Geometric Objects
- Chapter 17 - Change Existing Objects
- Part 5 - Hatches, Notes, and Dimensions
- Chapter 18 - Hatches, Fills, and Wipeouts
- Chapter 19 - Notes and Labels
- Chapter 20 - Dimensions and Tolerances
- Part 6 - Create Layouts and Plot Drawings
- Chapter 21 - Create Layouts
- Chapter 22 - Plot Drawings
- Part 7 - Share Data Between Drawings and Applications
- Chapter 23 - Reference Other Drawing Files (Xrefs)
- Chapter 24 - Link and Embed Data (OLE)
- Chapter 25 - Work with Data in Other Formats
- Chapter 26 - Access External Databases
- Overview of Using AutoCAD with External Databases
- Access a Database from Within AutoCAD
- Link Database Records to Graphical Objects
- Use Labels to Display Database Information in the Drawing
- Use Queries to Filter Database Information
- Share Link and Label Templates and Queries with Other Users
- Work with Links in Files from Earlier Releases
- Part 8 - Work with Other People and Organizations
- Chapter 27 - Protect and Sign Drawings
- Chapter 28 - Use the Internet to Share Drawings
- Chapter 29 - Insert and View Markups
- Chapter 30 - Publish Drawing Sets
- Part 9 - Create Realistic Images and Graphics
- Glossary
- Index
546 | Chapter 20 Dimensions and Tolerances
Ordinate dimensions consist of an X or Y value with a leader line. X-datum
ordinate dimensions measure the distance of a feature from the datum along
the X axis. Y-datum ordinate dimensions measure the distance along the Y
axis. If you specify a point, AutoCAD automatically determines whether it is
an X- or Y-datum ordinate dimension. This is called an automatic ordinate
dimension. If the distance is greater for the Y value, the dimension measures
the X value. Otherwise, it measures the Y value.
AutoCAD uses the absolute coordinate value of the current UCS to determine
the ordinate values. Before creating ordinate dimensions, you typically reset
the UCS origin to coincide with the datum.
The dimension text is aligned with the ordinate leader line, regardless of the
text orientation defined by the current dimension style. You can accept the
default text or supply your own.
To create ordinate dimensions
1 From the Dimension menu, choose Ordinate.
2 If straight ordinate leaders are required, turn Ortho mode on.
3 At the Select Feature Location prompt, specify a point location.
4 Enter x (X Datum) or y (Y Datum).
You can skip this step by making sure that the ordinate leader endpoint is
close to vertical for an X datum or close to horizontal for a Y datum.
5 Specify the ordinate leader endpoint.
Dimension toolbar
Command line
DIMORDINATE
X ordinate
Y ordinate
UCS origin