Chief is a division of milestone AV technologies. With over 35 years of proven product and service excellence, hundreds of product awards and patented designs, we are globally recognized as an AV industry leader. We design state-of-the-art mount and rack solutions that complement the technology they support. We are committed to delivering high-quality products that are easy to install and maintain. By producing the original projector mount roll, pitch and yaw adjustments in 1978, making registration quick and easy.