Whether you’re a full-time contractor or a home DIYer, whenever the job calls for accurate measurements and angles, you’ll need one of these carpentry squares. They are ideal for stair and roof framing as well as a variety of woodworking applications. We’ve included inexpensive plastic models that are perfect for the occasional user in addition to more elaborate options suitable for professionals.
10. Johnson Level & Tool CS10
The all-steel Johnson Level & Tool CS10 (appx. $20) measures a full foot along its longest edge and a solid eight inches down the other, giving you a simple, versatile right angle. Its powder-coated finish keeps the metal from rusting, but the numbers tend to fade over time.
- Internal notch for easier alignment
- Solvents will damage finish
- Scratches easily
9. Swanson Tool T0118 Speedlite
The Swanson Tool T0118 Speedlite comes in a variety of colors, helping to distinguish it from all the others on the job site. If a colleague does grab yours, though, you won’t have to worry about them accidentally breaking it, as it’s made of high-impact plastic.
- Center line guide
- Extremely inexpensive
- Markings can be hard to read
8. Zona 37-434
The Zona 37-434 (about $10) is a simple 3″ x 4″ tool made of stainless steel measuring a mere 0.022″ thick. It’s not something you’ll find much use for on larger jobs, but it’s a lifesaver on more intricate tasks. Plus, at that size, you can just carry it around in your pocket.
- Metric measurements on back
- Ideal for paper projects
- Gets bent easily
7. Stanley 46-053 Premium
The adjustable design of the Stanley 46-053 Premium (about $14) lets you use it as a saw guide, a bevel, or a protractor in addition to its traditional right-angled straight edges. It features common, jack and hip, and valley scales for even more applications.
- Heavy-duty body
- High-contrast markings
- Protractor often gets in the way
6. CH Hanson 03060 Pivot
To enable you to mark for degree or roof pitches accurately, the CH Hanson 03060 Pivot (about $53) features a locking mechanism that can hold the device at a specific angle. It also has three UV-resistant bubble vials built into its body to help you find a level.
- Rugged aluminum alloy construction
- Carrying pouch included
- On the expensive side
5. Vinca SCLS-2416
For larger jobs, there’s the Vinca SCLS-2416 (about $21). At 16″ x 24″, it allows you to measure longer pieces of wood without needing to constantly reposition it. It’s very sturdy, which prevents it from wobbling at the ends while also giving it enough heft to stay in place well
- Clear coat to protect finish
- Resilient stamped markings
- Ideal for trim work
4. Irwin Tools
This offering from Irwin Tools (appx. $13) sports a rustproof stainless steel blade, making it as suitable for use outdoors as in. It’s a worthwhile option for contractors who find themselves at a variety of work sites in the course of their week.
- Good for transferring measurements
- Easy to take apart and reassemble
- Slide moves freely
3. DeWalt Premium Rafter
The DeWalt Premium Rafter (around $12) utilizes a fat, flattened base to extend around the edges of work materials, providing a much better grip against whatever you’re marking or cutting. The bottom serves as a convenient stand to keep it upright and close by.
- High contrast white-on-black marks
- Weighs only 8 ounces
- Scribe notches for rip cuts
2. Stanley 46-071 Premium Quick
The yellow markings on the black frame of the Stanley 46-071 Premium Quick (about $8) make it easy to read in some of the toughest lighting conditions. Its extra-thick aluminum body ought to stand up to whatever mistreatment it encounters.
- 0 to 90-degree protractor
- Works as a saw guide
- Surprisingly lightweight
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