Printing or exporting to print from Free Web version?

Hate there is no print dialog. So printing from the browser is useless since it will only print what is visible on the screen. But exporting to PNG does the same thing! How can I select a print area or tell SU to print my entire image?

If I shrink the image to fit on the screen and export it to pull it into photoshop, all the dimensions are crammed together and unreadable. If I zoom in, it only exports a small portion of my image.

I am just creating a simple cut sheet from a piece of plywood. So I have lines on a rectangle and measurements at the top and bottom of the sheet.