3 Point

Add angular dimensions by specifying the centre point and the two angle end points.

This function allows you to add an angular dimension by selecting the centre point and then the two angle end points for the entity to be dimensioned. Thereafter, indicate the position for the text to be placed.

You can use the radio buttons in the Control Bar to specify a dimension style (Free, Chained and Running).

Dimensions use the current line style.

Procedure

1. You are prompted to:

2. The dimension style can be selected from the Style dropdown list. Alternatively, click to change the Dimension Style.

You can click Pick to copy dimension settings from an existing dimension entity.

3. Use the radio buttons in the Control Bar to select the style for the dimension.

4. Select the Autospace checkbox to space the dimension line at a fixed distance from the dimensioned line or arc. The auto-space distance (in mm on paper) is shown in the edit input just to the right of the checkbox. You can use this to adjust the auto-space distance. When auto-space is active, the position of the dimension line will be locked to the specified distance away from the dimensioned points.

5. Check the Text override checkbox if you want to be able to edit the dimension text.

Free Dimension Style

1. Position the cursor at the centre point of the arc you want to dimension. The Point snap mode becomes active.

2. Press [Enter] or click.

3. You are prompted to:

4. A line rubberbands from the centre point. Press [Enter] or click.

5. You are prompted to:

6. A line rubberbands from the centre point. Press [Enter] or click over the second point.

7.  You are prompted to:

8. A rubberbanded preview of the dimension is drawn and you can move the mouse to indicate the dimension offset. Press [Enter] or click in the desired position.

• If you have selected the Text override option, you will be prompted to type over the dimension text. Press [Enter] or click Enter to insert the dimension.

• If the Text override was not selected, the original measurement will be inserted and you will again be prompted to indicate the centre point as before.

9. You can continue to add dimensions as the function repeats.

10. Right-click and select Quit to end the function. Alternatively, press [Esc].

Chained Dimension Style

The Chained option works in the same way as the Free Dimension option. The difference is the dimensions follow on from the last indicated point.

1. You are prompted to:

2. Position the cursor at the centre point of the arc you want to dimension. The point snap mode will be active.

3. Press [Enter] or click.

4. You are prompted to:

This determines the angle.

5. A line rubberbands from the centre point. Press [Enter] or click.

6.  You are prompted to:

This indicates the angle.

7. A line rubberbands from the centre point. Press [Enter] or click over the second point.

8.  You are prompted to:

9. A rubberbanded preview of the dimension is drawn and you can move the mouse to indicate the dimension offset.

10. Press [Enter] or click in the required position and the dimension is inserted.

Remember if you have the Text override selected you will be able to change the text value.

11. The rubber banded preview is drawn.

12. You are prompted to indicate the next point that defines the second angular dimension.

13. Continue to enter the points as the function repeats. The dimensions are placed at the same offset as you selected when placing the first dimension. Each new dimensions start point is the end point of the last dimension.

14. Right-click and select Cancel to discontinue with the current alignment and continue dimensioning using a new starting point. Alternatively. select Quit or press [Enter] to end the function completely.

Running Dimension Style

The Running option works in the same way as the first two options. The difference is the dimensions are always taken from the very first point indicated.

1. You are prompted to:

2. Press [Enter] or click.

3. You are prompted to indicate the first point that determines the start of the angular dimension.

4. A line rubberbands from the centre point. Press [Enter] or click.

5. You are prompted to indicate the next point that defines the angular dimension.

6. A line rubberbands from the centre point. Press [Enter] or click over the second point.

7.  You are prompted to:

8. A rubberbanded preview of the dimension is drawn and you can move the mouse to indicate the dimension offset. Press [Enter] or click in the required position and the dimension is inserted.

 Remember if you have the Text override option selected, you will be able to change the text value.

9. The rubberbanded preview is drawn.

10. You are prompted to indicate a point that defines the second angular dimension as measured from the initial point.

11. Continue to enter the points as the function repeats. The dimensions are placed at the same offset as you selected when placing the first dimension. Each new dimensions start point is the end point of the last dimension.

12. Right-click and select Cancel to discontinue with the current alignment and continue dimensioning using a new starting point. Alternatively, select Quit or press [Esc] to end the function completely.