STAIR GAUGES: This construction square gauge set conveniently attaches to any conventional framing square or carpentry square. As a result; it facilitates the marking of stair stringers and other recurring right-angle measurements. CONSTRUCTION: These clamps are made of machined solid brass; which extends their longevity. Constructed with contractor quality; this set of square gauge features flush mounted knurled screws as well. APPLICATION RANGE: This brass stair gauge set is perfect for setting down precise stair stringers or repetitive cuts. Its toughness and precision make it suitable for any craftsman. PERFORMANCE: These flush-mounted thumbscrews with rafter and carpenter squares will help you get the job done faster. PRODUCT SPECIFICATIONS: The package includes [2] gauges; with dimensions – 2.5 × 5.25 × 0.75 inches. The weight of the saw gauges is 1.92 ounces (0.07 kg).