How do you know which foot to buy? I have a Brother 1500Q. Do I need a short or long shank?

Here ya go SusieQOH
https://leahday.com/collections/quilting-tools

The Brother 1500 ps is a high shank. Here is how to check: http://www.freemotionquiltingadventu...g-machine.html

Thanks. I thought you needed a special foot to use with the rulers. So...to be clear...when using Angela's rulers, I can use the foot that came with my machine??