You can measure the horizontal and vertical dimensions of an object in TAD. You must create an object and place it in a way that it intersects all the objects whose dimensions you want to measure.
To measure horizontal dimensions:
On the Create menu, click Create new object.
In the Create objects dialog box, under New enter Name of object.
Enter Width for the object.
Enter '0' for the Height of the object.
Click Create.
Place the object such that it intersects all the objects whose dimensions you want to measure.
In the Site Info Pane, under Info, select Show dims.
Note: Ensure that the helpers are on the new object.
To measure vertical dimensions:
On the Create menu, click Create new object.
In the Create objects dialog box, under New enter Name of object.
Enter '0' for the width of the object.
Enter Height for the object.
Click Create.
Place the object such that it intersects all the objects whose dimensions you want to measure.
In the site info pane, under Info, select Show dims.