#QT-DCL-ST Double clamshell + Straight template. All Yütien templates are laser-cut from 5mm acrylic and laser-engraved (etched) on the back side to reduce parallax errors and for long-lasting accuracy when quilting.
The clampshell (half circle) on top is 3" outside diameter to create half circle (clamshell) in 3-1/2" and the one on the bottom is 2-1/2" inside diameter creating half circle (clamshell) in 2" diameter. The straight edge with stopper on both ends is for making stitch in the ditch easily and accurately.
The two holes (1" or 25mm dia.) help you steady the template easily.
This template will allow the quilter to create numerous shaped lines or designs on the quilt on both long arm quilting machine and home sewing machine with the use of special ruler foot 1/4" which you can order online at: http://www.vicsew.com/index.php?route=product/product&product_id=2706&search=ruler+foot
The thickness 5mm is enough for safety when used with long arm quilting machine hopping foot and also high enough for home sewing machine foot shank clearance. We recommend you to use ruler gripping dots to be attached under the template to avoid slippery. You may order this product online at: http://www.vicsew.com/index.php?route=product/product&product_id=109&search=gr24