If you're at a PC, on your keyboard, press Ctrl while tapping the "+" key next to the number grid. The resulting enlargement might get fuzzy or pixelated, tho.
Don't forget to return it to the original size (Ctrl and "-") or (if its like my computer)every other site you go to will be enlarged too.
It's true though....a bad/small copy will pixilate when you blow it up. But now at least I can read some of the print if not all!
That stuff is a real slice of Americana....glad someone is chronicling it. Love looking at those old ktichen designs and built ins. Sure takes me back.......
I remember when the Mad men for Canon went after Nikon....everybody won there because they both made better products as a result.