Here is a very rare Linhof projector platform to hold the Linhof slide projectors. It's very well made of cast magnesium and has a 90mm drop in base to work with any of the tripods with 90mm mounts. It measures 13.25"x19.5" and offers a 0.625" lip around the perimeter. There is also a 3/8" thread for traditional tripods. The green vinyl base is in great shape! a little dirty but no rips or cuts on it. It would a great base to hold computer in studio as you shoot!