Use this Cross Hair Ruler to easily and quickly locate the center of an 8 inch block and mark 4, 8, 16 and 32 lines as required.
 
The Westalee Design 8 Point CROSSHAIR RULER  is for marking 4 (90°) or 8 (45°) or 16 (22.5°) or 32(11.25°) reference lines.
When using rotating templates, reference lines will give much more accurate spacing. On a domestic machine the quilt is not taught as on a longarm machine and there is movement of the quilt sandwich which can make it difficult to use the rotating lines on templates alone.