Recommended for material 50 mm or larger.
What Comes in the Kit?
Monster Square 300 mm
Monster Square 200 mm
Recommended for material 50 mm or smaller.
Locking C-Clamps (2-Pack)
Quick and secure clamping on multiple flat surfaces of our squares.
Edge Alignment Pins (4-Pack)
Get a handy overhang for lining up on different surfaces.
Monster Square
Use the square to locate tabs precisely
Unlike a ruler, it gives you reference in space and corrects roll so parts line up right.
Set your distance, lock it in with pliers
Now your material runs perfectly parallel and stays put through the whole setup.
Use it to set 90° or 45°
Position your parts fast and clamp them solid for square, accurate weld-ups every time.
Use tabs to prevent twist
Hold parts square and steady through the final weld. Bonus: They grip round tubing too.
Cast Aluminum Mobile Variant
The lightweight aluminum variant is ideal for mobile fieldwork. It acts as a massive heat sink for thin metals and remains completely rust-proof.
Unmatched Manufacturing Quality
Machined flat to tight tolerances, these squares beat standard hardware speed squares.
Clamp it from any side
Multiple faces give you fast, rigid hold without wasting time on tricky setups or uneven surfaces.
Huge Setup Time Savings
Replacing slow manual jigs with this square turns a day of tedious fit-up into a 15-minute task, easily paying for itself in shop labor savings.
Material
| Aluminum (AL) |
| Pros
|
| Cast Iron (FE) + Dragon Scale |
| Pros
|
What is Dragon Scale Coating?
Superior Anti-Spatter Properties
Improved Corrosion Resistance
Enhanced Wear Resistance
Steel vs Dragon Scale Coating
Nitride vs Dragon Scale Coating
Full Video (Dragon Scale Demo)
Included Accessories
4 Edge Location Tabs
Our innovative tabs make welding tables optional.
- Align perfectly in seconds
- Skip the $1,000+ flat table
- Tabs attach front or back
4 Tool-less thumbscrews
We reinvented the game—just twist and go. No more hunting for the right tool!
- No hex keys or Allen wrenches
- Adjust tabs with just your fingers
- Quick changes, no tools needed
Edge Alignment Pins
Snap on edge alignment pins to any square and get a handy overhang for lining up on different surfaces. Depending on the square, you can set it to 90°, 45°, parallel, or even 60° and 30° angles.
- Pair with Monster Squares to turn them into a speed square for quick layout work
- Mount off the edge of a table for vertical or perpendicular positioning
- Raise the square off the surface to add clearance while fitting or welding full frames
- Pro tip: Marking parallel lines? Pair with our shims for perfect spacing every time.