Features Exquisitely Crafted: Precision scales and worry- surveying for accurate measurements in various applications. Aluminum Alloy: Lightweight, sturdy, and rust-resistant design ensures long-lasting use without wear or rust concerns. Versatile Measurement: Ideal for home improvement, engineering drawing, hardware and machinery measurement, and teaching applications. Six Ratio Options: Choose from six ratios for customized and measurements based on your specific needs. Reliable Accuracy: Provides the necessary precision for confident and worry- use in various measurement tasks. Features: 1、This triangular ruler is exquisitely crafted, with scales, and super worry？ surveying. 2、The triangular ruler is made of aluminum alloy, not easy to wear, light and hard, not rusty and not afraid of falling. 3、Triangular ruler is widely used in a variety of scene measurement, such as home improvement measurement, engineering drawing, hardware and machinery measurement, teaching measurement. 4、There are six ratios for the three？sided ruler to choose from, so you can buy it on demand. 5、Our triangle ruler can provide you with the necessary accuracy, so you can use it without worrying. Specification: Item Type: Triangular Metal Scale Material: Aluminum Alloy Measuring Range: Approx. 30cm / 11.8in Total Product Length: Approx. 32cm / 12.6in Specification: Scale Bar Black Small Scale Colour: Black Proportion:1:20/1:25/1:50/1:75/1:100/1:150 Package List: 1 x Triangular Scale Ruler Package List 1 x Triangular Scale Ruler