12.5" CROSS HAIR SQUARE - 6 POINT..Ruler, 3 (120°), 6 (60°), 12 (30°), or 24 (15°) reference lines (CHR-6-12.5)

8.5" CROSS HAIR SQUARE - 5 POINT ..Ruler 5 (72°), 10 (36°), or 20 (18°) reference lines (CHR-5-8.5)

Patchwork of the Crosses by Lucy Boston. Acrylic Block with 3/8"Seam Allowance

WA-BOOK12BTRI, 12 Flying Bell Curve Triangle Block Designs 60pg Book (BK FBC DES-2)

WA-BOOKCHSCQI, Designing with the Westalee Design Crosshair Ruler - Creative Quilting Inspiration 60pg Book (CHR-BK)