Features Precise Height Measurement: Designed for accurate height measurement, this tool ensures your stair layout frames are perfectly aligned for professional results User-Friendly Design: Easily insert the gauge into the groove for improved visibility of ruler markings, making it simple to achieve precise cuts every time Durable Aluminum Construction: Made from anodized aluminum alloy, this tool offers exceptional hardness and wear resistance for long-lasting performance Eye-Catching Color: The vibrant red knobs enhance visibility and can be effortlessly attached to any square frame or rafter, ensuring you never misplace your tools Enhanced Stability: Featuring a hex flat design, this tool provides increased friction for better grip and stability, ensuring a secure fit during all your carpentry projects Features: 1、Main Application: Stair gauges are mainly used for height measurement of square attachments to stair layout frames. 2、Easy to Use: You can see the ruler markings simply by inserting the stair gauge into the groove, increasing the field of view. 3、Aluminum Alloy: The stair gauge is made of anodized aluminum alloy, which has good hardness and wear resistance to ensure its longevity. 4、Red Stair Gauge: The red stair gauge knobs is an eye catching color that you can easily attach to any square frame or rafter. 5、Hex Shape: The hex flat design of the stair gauge makes it have bigger friction, which can be better and more stable to fix the square frame. Specification: Item Type: Stair Gauge Material: Aluminum alloy Color: Red Purpose: Tall stair gauge for square attachment to stair layout frames Package List: 2 x Stair Gauge Package List 2 x Stair Gauge