👉 A visuometer is a device used to measure the angle of a beam. It consists of an optical system that projects a beam onto a screen, which then measures the angle between the projected beam and the horizontal line on the screen. Visuometers are commonly used in navigation systems for measuring angles of elevation or depression. They can be used to determine the height of objects above ground level from an aerial view or to estimate the altitude at different altitudes within a given area.
