1. Press DIMENSION 1.

2. Pick CHAIN and Perpend to.

3. Select MANUAL or AUTO placement.

4. Identify a reference line. You can identify any line on the drawing as the reference line.

5. Select the dimension points or elements to be dimensioned. If your selection contains multiple drawing elements, they become the first members in the chain.

6. If MANUAL placement was selected, indicate the desired location for the dimension text(s), using the dimension trace for guidance.

7. To continue the chain, select additional linear elements.