A 15-91's harp is 8 1/2" right of the needle and almost 9 inches high. It and the 201 with the drop in bobbin are about as large as you are going to find in a vintage home machine. I have a 31-15 industrial that is 10 1/2 to the right of the needle but it has to be in an industrial table. It is a great machine for FMQ though, because of the space and the speed.