Johnson Level Tool RAS-170B-ORA 12 in Rafter Square

Product Description

The JOHNSON LEVEL TOOL RAS-170B-ORA is a 12-inch rafter square constructed from high-impact Structo-Cast plastic. Designed for layout and angle work on framing, roofing, and general carpentry, it delivers the core functions of a traditional steel square in a lightweight, durable form. Permanent molded graduations resist wear and remain legible through heavy jobsite use. The thick edge serves as a direct saw guide, reducing the need for separate clamping or marking steps. Carpenters, framers, and roofers reach for this tool when speed and portability matter on the cut line.

The RAS-170B-ORA suits residential and light commercial framing applications including rafter layout, stair stringer marking, and angle transfer. Its lightweight plastic construction reduces hand fatigue during repetitive layout tasks. The built-in scribe notches allow fast, accurate line marking against framing members, and the unique centering feature makes it a practical choice when locating the center of circles or round stock. It is sold as an individual unit.

Key Features

• High-impact Structo-Cast plastic frame for lightweight durability
• Permanent molded graduations for lasting readability
• Thick edge functions directly as a saw guide
• Built-in scribe notches for fast, accurate line marking
• Unique centering feature for locating circles or round material
• 12-inch blade length suitable for standard framing layout tasks

Compatibility

Designed as a general-purpose rafter and framing square for residential and light commercial carpentry, roofing, and layout work.

Installation Notes

No installation is required for this layout tool. Carpenters and framers should confirm blade alignment against a known straight edge before relying on the square for critical angle cuts. Keep the molded graduation surfaces clean and free of sawdust to maintain accurate readings. Inspect the plastic frame periodically for cracks or warping that could affect squareness.

Technical Specifications

• Blade Length: 12 inches
• Material: High-impact Structo-Cast plastic
• Weight: 0.692 pounds
• UPC: 00049448727001
• Sold As: Each

Standard Information

• Brand: JOHNSON LEVEL TOOL
• Manufacturer Part Number: RAS-170B-ORA