48” Aluminum Carpenter's Square

Take on big jobs with the Promes Tools 48" Carpenter's Square. World's largest and most powerful layout tool. Great for deck builders, setting concrete forms, tile work and so much more. Designed for professionals who work with sheet goods, framing, roofing, and large lumber, this square delivers the accuracy and durability you need when a standard tool won’t cut it.

Key Features:

Oversized 48-Inch Design – Ideal for layout on full sheets of plywood, wide framing, and large-scale construction

Machined-Engraved Markings – Clear and permanent lines that are easy to read in any light, much better than laser engraved markings found on smaller squares these lines are truly a cut above the rest.

Rigid Aluminum Construction – Built tough for the jobsite without added weight

Multi-Use Tool – Functions as a square, protractor, layout guide, saw guide, and more

Engineered for the Jobsite – Designed for real-world speed and accuracy

5 piece design – Multi-piece design for affordable shipping. Screws and tool for assembly included.

Custom laser engraving available as an add-on. Just add custom engraving to your cart before checkout and upload your logo file.

Our tools are meant to be used. Minor surface scratches and cosmetic imperfections are normal and expected. Due to the anodizing process, some colors may show more character from the base aluminum than others.