How it works
Open it. Mark three sides. Fold it flat.
The only square that, in the open position, marks three sides of any 2× material in a single motion.
- 1
Open the square
Unfold it into the open position, like dropping your truck into 4x4.
- 2
Straddle the stock
Set it over any 1½″ to 2″ material. Both fences register against the board.
- 3
Mark three sides at once
One pass marks both faces and the top edge: a perfect perpendicular line, regardless of board quality.
- 4
Fold it flat
Closed, it works exactly like the everyday square already in your apron.
The difference
Rapid Rafter vs. a traditional square
| Job-site task | Rapid Rafter | Traditional square |
|---|---|---|
| Squaring a 2× cross-cut | Marks both faces and the top edge in one motion | Mark one face, flip the square or board, mark again |
| Rough boards or boards with wane | Perfect perpendicular line regardless of board quality | Line can wander on uneven edges |
| Everyday carry | Folds flat, works as your normal square | Standard everyday square |
| Design | Patented dual-sided design, U.S. 11,654,545 | Single-sided |
Watch it work
See it on a real board
The tool for this job
Put three-sided marking in your apron
Rapid Rafter Pro$59.99Was $79.99
- Marks three sides of 2× material in one motion: both faces and the top edge
- Aluminum body, laser-etched scales, wider scribe
- Patented double-sided square, Popular Mechanics Gear of the Year 2025
Working doubles, LVL or posts? The Pro Base-Plate Kit adds 3″, 4″ and 6″ plates, $59.99. Buy the kit
Free U.S. shipping ·30-day returns ·1-year warranty