The Johnson Level RTS24 Rockripper is a drywall scoring square designed for professionals and DIYers who need to mark and score drywall quickly and accurately. The 24-inch perforated aluminum blade accepts a utility knife point, allowing you to create clean, efficient scores on drywall sheets. This combination square solves the problem of uneven cuts and marks by providing a stable guide with clear graduations that remain visible even in low-light job site conditions.
Whether you’re hanging drywall on a large renovation project or tackling a smaller DIY installation, the Rockripper delivers the precision needed for professional results. Its lightweight aluminum construction makes it easy to handle and transport between work areas, while the molded Structo-Cast head withstands the demands of active job sites.
Features and Benefits
- Perforated Aluminum Blade: The 24-inch blade features a 1/16″ offset perforation that accepts a utility knife point for efficient drywall scoring.
- Structo-Cast Head: The molded, high-impact head is built to withstand harsh job site conditions and provides a permanent 90° angle for consistent accuracy.
- Easy-to-Read Graduations: Thermal-bonded black graduations in 1/8″ and 1/16″ increments are large, bold, and clearly visible even in dim lighting, with both English and metric measurements.
- Hand Grip and Board Guide: The tool features a comfortable hand grip and integrated board guide for smooth, accurate operation.
- Extruded Aluminum Blade: The blade is constructed from extruded aluminum to withstand rigorous job site conditions.
Specifications
- Brand: Johnson Level
- Model: RTS24
- Blade Length: 24 inches
- Blade Material: Extruded aluminum
- Head Material: Molded Structo-Cast
- Graduations: 1/8″ and 1/16″ increments, English and metric
- Blade Design: Perforated with 1/16″ offset to accept utility knife point
- Weight: Approximately 1 lb
- Dimensions: 2 x 20 x 27.44 inches








