Description: 【Adjustable Angle Range】: This Triangle Ruler Protractor features a versatile design that allows you to adjust angles from 0 to 180 degrees, making it great for a variety of marking and measuring tasks 【Aluminum Alloy Construction】: Crafted from aluminum alloy, this Rafter Square is built to withstand regular use while maintaining its precision and durability over time 【Compact Dimensions】: With dimensions of 8.3cmx8cmx11.2cm, this Carpenter Measuring Layout Tool is compact enough for easy handling and storage, yet large enough to provide accurate measurements 【Multiple Functions】: Practical multipurpose Woodworking Ruler with Protractor, which is easy to use, easy to mark line and measure angles, effectively improves work efficiency, convenient and labor saving 【Wide Applications】: Professional carpenter square measurement tool, suitable for carpenters, machinists, engineers, workshops, industrials, and household use Specification: Material: Aluminum Alloy   Size Chart: 8.3cmx8cmx11.2cm/3.27inchx3.15inchx4.41inch Package Includes: 1 Carpenter Square