ElisabethLongarm rulers are 1/4” thick, while domestic machine rulers are thinner. You would have to check your darning/hopping/free-motion foot for clearance at the BACK of the foot, because on some machines the back of the foot can become hung up on the thicker plastic used for longarm quilting.
I believe this issue is a fairly persistent problem, which led to the development of domestic machine ruler kits.
I'm not the manufacturer. I’m just a longarm quilter.
Elisabeth1/4” rulers work best with high shank sewing machines. Otherwise you have to make sure there is enough clearance around your needle and foot. Check with something that is 1/4” thick to see if it will slide around. Also, to make sure your sewing machine foot doesn’t slide under or over the ruler and mess up your machine’s timing or worse, get a 1/4” ruler foot. Some of the sewing machine manufacturers are making them for their sewing machines.