Feature: 1. Accuracy Measurement: Equipped with a compass, this tool accurately measures the verticality of solar panels by utilizing angle and light focusing. 2. Portable and Outdoor Friendly: Conveniently portable, this solar panel angle tool can be used outdoors to determine angles, enhancing the efficiency of solar panels. 3. User Friendly Performance: Simple to use, this solar tracker tool is suitable for various types of solar panels, making it versatile and easy for all users. 4. Efficient Solar Panel Optimization: Utilizing this device, users can fine tune the angles and directions of solar panels, maximizing the efficiency and output of solar energy. 5. Use Indication: When the black dot shadow on the dial approaches the central black cross, it is at 90 degrees; The closer the sunlight angle is to 90 degrees, the higher the amount of solar energy absorbed. Specification: Item Type: Solar Angle Guide Material: Plastic Size: Approx. 4.5cm / 1.77in Weight: Approx. 19.00g / 0.67oz. Package List: 1 x Solar Angle Guide Note: The product is a device to assist the solar panel to concentrate on the sun, so as to better let the solar panel arrive the best angle.