Westalee Ruler Foot Echo Guide, 3 Piece Set. Leonie West found that when she tried stitching an Echo around a Spin-e-fex design using a curved ruler, the .24 in. echo was easy, but the .5 in. or .75 in. echoes proved more difficult (all Westalee Design Templates are designed based on a .25 in. seam allowance). When Westalee produced their Domestic Ruler Foot, they also designed these Echo Guides to make this task easy. Echo Guides simply fit over your Westalee Design Ruler Foot (or other .5 in. ruler foot) to extend the distance from the Ruler Foot edge to the needle, helpful when stitching a .5 in. or .75 in. echo. The Echo guides also suit Handiquilter, Nolting, Gammill and all machines with an approved Ruler Foot for Template work.