Long arm rulers are 1/4" thick acrylic.  Designed to be used on your domestic sewing machine or a long arm quilting machine.  Our rulers come as a 2-piece set which includes both the concave and convex curves, a straight edge and oodles of reference marks for easy marking.

We have three original long arm rulers which support our piecing rulers:

QCR Curvit - curve matches the Quick Curve Ruler

Mini Curvit - curve matches the QCR Mini Ruler

Wonder Curvit - curve matches the Wonder Curve Ruler