The Pro-Tech Aluminium Rafter Square (also commonly called a Speed Square) is a versatile, durable triangular measuring and layout tool designed primarily for carpenters, builders, roofers, and DIY enthusiasts. It’s made from lightweight yet tough aluminium, making it rust-resistant, weatherproof, and easy to handle on job sites.
New
Pro-Tech Aluminium Rafter Square,
Price range: R134.00 through R285.00 (each excl. VAT)
Key Features
- Material: High-quality aluminium construction — durable, corrosion-resistant, and lightweight for everyday use.
- Sizes Available: Typically offered in 180mm (about 7 inches) and 300mm (about 12 inches) versions.
- Design: Triangular shape with a wide T-edge/base (lip) that hooks securely onto the edge of lumber.
- Markings and Functions:
- Clear, high-visibility laser-etched graduations and markings (metric).
- Angles from 0° to 90° for quick protractor-like measurements.
- Built-in common rafter, hip/val (hip/valley), and conversion tables for roof pitch, rise/run calculations.
- Line scribe guides, pivot point, and notches for precise marking and scribing.
- Additional Perks: Easy-to-read markings.










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