Entity toolbar : 
The Linear Dimension Tool is responsible for creating Linear Dimension Entities that represent the distance between two points either along the X-Axis or Y-Axis.
Find the Linear Dimension Tool icon
from the Entity Toolbar (color coded blue) or Dimension Flyout Toolbar and highlight it. While highlighted Click on the tool. The tool is now the active tool and ready for use.


| 1. | Click anywhere on the drawing screen to designate the Start Point of the Dimension at that location. |
| 2. | Move the mouse and Click on a point you desire to be the End Point. If in On Y Axis Mode the dimension will represent the distance between this point and the Start Point along the Y-Axis. If in On X Axis Mode the dimension will represent the distance between this point and the Start Point along the X-Axis. |
| 3. | Move the mouse and Click on a point you wish to designate as the Offset Point. This point is the basis for offsetting the notation of the dimension away from the dimensioned entity or space. The Dimension text will be positioned parallel to the axis of measurement |
Reset:
You have just added a Linear Dimension Entity to the drawing using a Start Point, End Point, and Offset Point. The tool has now Reset and you can either continue with other tools or add in another Linear Dimension Entity. Using Reset at any time while using this tool cancels all previous steps and restarts the tool.
To add an Linear Dimension from user supplied data, do the following . Move the mouse cursor beyond the right side of the drawing screen to the Tool Property Tree.

| 1. | Type in the Start Point point data into the "Start Point" 3D Point Property Field found on the Tool Property Tree and press Enter to accept. This will position the starting point for the linear dimension. |
| 2. | Type in the End Point point data into the "End Point" 3D Point Property Field found on the Tool Property Tree and press Enter to accept. If in On Y Axis Mode the dimension will represent the distance between this point and the Start Point along the Y-Axis. If in On X Axis Mode the dimension will represent the distance between this point and the Start Point along the X-Axis. |
| 3. | Type in the Offset Point point data into the "Offset Point" 3D Point Property Field found on the Tool Property Tree and press Enter to accept. The Dimension text will be positioned parallel to the axis of measurement. On acceptance the Linear Dimension Entity creation process will be complete. If in Show Unit Mode the resultant dimension text will have the current unit displayed. |
Reset:
You have just added a Linear Dimension Entity to the drawing using a Start Point, End Point, and Offset Point. The tool has now Reset and you can either continue with other tools or add in another Dimension Entity. Using Reset at any time while using this tool cancels all previous steps and restarts the tool.
Tab: Auto snap Enabled key enables/disables the auto snap feature. Auto snap automatically enables the end and mid Entity Snap features.
Show Unit will display the dimension's unit within the Dimension Entity's text.
Escape (Esc): key cancels current tool and activates the default tool (Selection Tool).
Space: key Resets this tool.
Also See:
Dimension Entity
Manage Dimension Styles
Grid
Grid Snaps
Entity Snaps
Notification Bar
Flyout Toolbar