Easy to use with a simple adjustment mechanism for optimal solar panel tilt angle. Suitable for various types of solar panels including fixed, adjustable, and portable models. Lightweight and portable design for easy transportation. Made from high-quality ABS and acrylic materials for durability in harsh weather conditions. The Solar Angle Guide helps you determine the best angle for your solar panels to maximize energy output and efficiency. By using the Solar Angle Guide, you can ensure that your solar panels are operating at maximum efficiency, saving you time and providing a great deal of help for your time outdoors. Simply adjust the solar panel with the shadow of the black dot in the center of the scaled panel to get the ideal tilt angle. The closer the lighting angle is to 90°, the higher the solar energy intake and the shorter the solar charging time. Color: As Shown Material: ABS Package Contents: 1*Solar Angle Guide Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.