7 Best Joiner Squares 2025 in the United States

The Woodpeckers Precision Woodworking Square is designed with high-end features that cater to precision woodworking tasks. Made from durable cast aluminum, this square promises longevity and stability. The 18-inch size makes it versatile for various woodworking projects, ensuring ample coverage for measuring and marking tasks.

Accuracy is a standout feature, with the square being precise to within 0.001 inch along its entire length, making it suitable for meticulous work where high precision is required. The laser-engraved scales in 1/16th increments offer clear and easy-to-read measurements, which enhances usability.

The handle design includes a shoulder lip that allows the square to lay flat on the work surface, facilitating accurate marking on either edge of the rule. Additionally, the thick base ensures that the square can stand upright for hands-free operation when checking machinery setups like table saw blades or jointer fences. This product also includes a notch at the inside corner to help zero-out layout lines to the edge of the workpiece. While the high precision and feature-packed design make it an excellent tool for professional woodworkers, the solid aluminum construction means it's relatively heavier compared to plastic squares, which could be a drawback for some users. However, the robust design and accuracy make it a valuable addition to any serious woodworker's toolkit.

The Woodpeckers Delve Square set is designed with precision and versatility in mind, making it a valuable tool for woodworking enthusiasts. This set includes two squares, measuring 3.5 inches and 6 inches, both made from durable stainless steel. This material choice ensures longevity and resistance to wear and tear, which is essential for maintaining accuracy over time. The stainless steel construction also adds a sleek and professional look to the toolset.

Accuracy is a significant strength of the Delve Square, thanks to its graduation range of 1/16 inches. This level of precision is ideal for detailed woodworking tasks, ensuring your measurements and markings are spot-on. The tool features various offsets, including 1/4” and 3/8”, which simplify common woodworking tasks such as mortise and tenon layout and centering on 3/4” wood.

The Woodpeckers inDexable Square System is a feature-packed 12-inch combination square designed for woodworking. Its stainless steel construction ensures durability and longevity, making it a strong choice for anyone who values high-quality materials.

The size is versatile with a 12-inch rule, suitable for a variety of tasks from woodworking to general DIY projects. Accuracy is a key strength of this product, with laser-engraved graduations that won't wear off, and the combination square head allows for precise 45° and 90° measurements, making it a reliable tool for precision work.

The sliding head's indexing system every 1 inch helps to lock the head in place for accurate scribing, which is a thoughtful feature for detailed work. Additionally, the built-in scribing guides on 1/16