Below is the corrected temple.

Digital TV Coathanger Antenna Template

Print on 8.5 x 11 paper, tape together, and then tape/glue to your piece of wood (optional). It will make laying out the screws and the wires a lot easier. It is designed for making the 20 inch long model found on the Make site. 

Be sure to print the PDF at 100%. Some software will try and reduce it. It should have only 0.25 inch margins top/bottom. If you print it out and tape it together it should be 20 inches long. If it’s 19-ish then your PDF reader has scaled it. Be careful, it got me, too.

The general measurements are:

First set of screws are 1 inch from each end.
Second set of screws are 7 inches from each end.
Center screws are 10 inches from either end. 

The elements should be symmetrical. In my original template I mirrored the bottom part upside down. I’m so sorry about that.