DeWalt 33' Laser Square
This laser square is a durable and accurate tool for tiling. It has a 33-ft. length and 3 integrated mounting pins for easy placement on walls. It offers IP54 debris/water resistance and an aluminum base for durability, and its two red beams achieve a 90-degree angle for a wide range of uses. The price drops from $69.99 to $45.99. Shipping is free with Amazon Prime. Else, it adds $6.