The RED TAIL Ruler Set includes a set of rulers in 4”, 6”, and 12” sizes. Additionally, each is interchangeable with other Swan measuring tools, including the RED TAIL Offset (Pt# OR800), MERLIN Flat Double Square (Pt# FDS800), and RIDGEWAY Adjustable Carpenter Square (Pt# ACS200), so you can customize your Swan Tool Squares to meet your specific needs.

• Tru-Mark Edge – No offset, no guesswork. This proprietary innovation ( Standard on our RED TAIL Rulers) eliminates the need for center-finding or workaround methods, giving professionals a faster, more intuitive way to mark with confidence.
• Dedicated Pencil Saddle ensures consistent line placement, turning the RED TAIL  Ruler into the most reliable marking companions for any precision task.