How to Use the Precise Adjustment Tool to Change the Length of a Line
You can make precise adjustments to the line segment of a line drawn with the Draw Tool:
Select the Edit/Measure Tool
On the left-side pop-up, select “Length and °”. The ° symbol is the “Degree” symbol.
Click the Precise Adjustment Tool
Hover over the drawn line, then click on the Precise Adjustment symbol for the line segment that you want to edit. The Precise Adjustment tool will appear in the mid point of the line segment you wish to edit. The Info Bubble will display the Length of the line segment and the Bearing of the angle of the line segment.
Type-in the new length, then click “Save”
On the pop-up, click on one of the locks to choose which end-point you want to remain in place.
"Prev" and "Next" buttons will take you to the previous or next segment in the line, allowing you to update the line precisely as needed. By clicking the Left or Right Lock you can lock one end of the line segment, this will allow you to control what side you work with.