Tabernacle pivot assembly - tracing the mast cross section on the template

Because the mast section has thin lines beveled in the extrusion every 90° around it (makes it easy to line up and drill for hardware), intersecting lines on the template made it very easy to line up perfectly on the mast extrusion end, for tracing the mast cross section to the template. You can see the pencil line I already traced in the picture, about 1/16 inch out from the aluminum surface itself.