TrigJig G-Rafter 180 PRO Metric Speed Square

• Product: TrigJig G-Rafter 180 PRO Metric Speed Square

• Target Trade: Framers, Roofers, Carpenters, Builders

• Core Innovation: Fully CNC deep-engraved scales providing permanent anti-wear markings, integrated with a 360° spirit level.

• Best premium metric roofing square with non-fading markings and built-in level for avoiding layout drift.

The TrigJig G-Rafter 180 PRO is a precision-engineered roofing tool designed to eliminate the most common failure point of standard speed squares: worn-out markings. CNC milled from a solid 4mm plate of high-quality T6 Aluminium, this square features fully deep-engraved scales that guarantee permanent readability. With an unmatched right-angle precision of +/- 0.008° along its entire length, the G-Rafter 180 PRO delivers absolute accuracy for flawless timber layout on any demanding New Zealand job site.

The Pro's Equation: Permanent Precision

In professional framing and roofing, measurement drift caused by faded markings leads directly to compounding errors and costly material rework. Cheap squares force you to guess your angles after a few months of heavy use. The TrigJig G-Rafter PRO solves this through enhanced anti-wear engineering, ensuring your hip, valley, and protractor markings never rub off. Furthermore, the integration of a high-visibility 360° bubble vial in the dual-sided fence means you can instantly check level and plumb without walking back to your tool belt to switch tools. This combination of permanent accuracy and operational speed makes this square a strict buy-once, cry-once investment.

Why Pros Choose the TrigJig G-Rafter 180 PRO:

• Permanent Markings: CNC deep-engraved scales provide permanent visibility, immune to job site abrasion.

• Integrated Spirit Level: High-visibility 360° bubble vial allows for instant plumb and level checks.

• Absolute Accuracy: Milled in Great Britain to an extreme tolerance of +/- 0.008°.

• Advanced Scribing: Features scribe notches every 5mm and 1/3rd scribe marks specifically for common timber widths.

• Roofing Ready: Equipped with a metric rafter length per metre run table and a dedicated birdsmouth line for complex cuts.

Will the markings fade or rub off over time on a busy construction site?

No. Unlike standard squares that use surface printing or light laser etching, the TrigJig G-Rafter PRO features fully CNC deep-engraved (recessed) scales. This process physically machines the numbers into the metal, ensuring the markings will never wear off regardless of heavy daily abrasion.

Can I use this speed square to check plumb and level directly?

Yes. The square is engineered with an integrated high-visibility 360° bubble vial inside the fence. This allows professional framers to immediately check for level and plumb during layout without needing to reach for a separate torpedo level.

Is the G-Rafter PRO fully optimized for metric roofing calculations?

Yes. It is a dedicated metric tool that features a 183mm main rule, scribe notches every 5mm, a rafter length per metre run table, and a dedicated birdsmouth line to expedite complex metric roofing pitch calculations.