The Measuring Grid is a glass or a metal plate made with a cut-out pattern featuring a grid of evenly spaced lines. The measuring grid is used in setting up lighting to visually assess and correctly position the virtual sign. It holds importance while correcting for distortion or the "keystone effect" due to angling the light source. Basically, the measuring grid is like a virtual reference to ensure a projected image is easily visible, straight, and properly aligned on the surface. The black or white surface cuts down reflections inside the fixture and increases the sharpness and clarity of your image, showcasing less 'glow' around your projected image.
