Carpenters, woodworkers, and DIYers will find this adjustable square offers multiple layout functions in a single, versatile tool. The sliding head locks securely anywhere along the 8" anodized aluminum ruler, allowing the tool to be configured quickly for different measuring and marking tasks. With the head positioned at the end of the ruler, it functions as a traditional try square. Sliding the head inward converts it to a double square for offset measurements.

The red section of the head unlocks and pivots to create angle settings up to 45°, expanding the tool’s capability to include bevel‑style angle layout. A built‑in stabilizer along the angled fence allows the side of the head to rest against a workpiece edge without tipping, helping maintain consistent positioning during use.

The ruler incorporates Swan Tool Group’s Tru‑Mark Precision Marking Technology. Subtle rabbets along both long edges offset the pencil tip, allowing lines to be drawn exactly where intended without compensating for lead thickness. This design helps reduce parallax errors during layout. A pencil saddle at the end of the ruler further supports accurate line placement by positioning the pencil tip directly at the ruler’s edge.

Features:

• 8" thick anodized aluminum ruler with laser‑etched markings and adjustable locking head
• Configures as a try square, double square, or bevel‑style angle gauge
• Main body of the head remains square to the ruler at any position and locks with a knurled thumbscrew
• Pivoting red head section opens for angle settings up to 45°
• Integrated stabilizer helps keep the head aligned against a workpiece edge
• Designed by woodworker Izzy Swan
• Tru‑Mark Precision Marking Technology supports accurate pencil alignment along edges and ends
• Pencil saddle fits typical 0.7 mm–0.9 mm mechanical pencil leads
• Head is compatible with 4", 6", and 12" rulers from the Red Tail Ruler Set (sold separately)
• Includes an EVA storage tray for protection between uses

Specifications:

• Length: 8"
• Material: Anodized aluminum

What's Included:

• (1) Ridgway Adjustable Carpenter Square