The Good Measure Every Clamshell set gives many different-sized options, based on circles with various diameters. It can produce 1”, 2”, 3”, and 4” clamshells respectively. It features markings that clearly indicate the previous row's quilting lines. When you move from one row of clamshells to the next, the lines on the ruler will line up right on top of your previous row of stitching for perfect placement with no marking.
These rulers are longarm thickness.
My Good Measure Quilting Rulers feature a non-skid backing and two colors of lines for ease of quilting.
Good Measure Amanda Murphy Clamshell 2pc Longarm Machines
1 Review
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Good Measure Clamshell ruler
Easy to use. Lines to place ruler in the correct position are very helpful