Ruler - A Screen Ruler For You

Ruler is an accurate length measuring tool. By measuring the size of your monitor, you create one or more screen rulers on the screen that are the same as a real ruler, so that you can measure length without having a real ruler. * Support for generating one or more rulers - Horizontal ruler - Vertical ruler * Unit of measurement - Centimeter (cm) - Inch (in) - Pixel (px) * Keyboard shortcut movement - Move up - Move down - Move left - Move right * Display - Horizontal length - Vertical length - Diagonal length * Transparency (0~1)