Parallax Instruments, Inc. Parallax Instruments, Inc. Precision astronomical telescopes and mountings Homepage About Products Testimonials Contact Bringing the planets closer... Parallax Instruments, Inc., founded in 1991, is a full-time business devoted to the manufacturing of large precision astronomical telescopes, equatorial mountings, aluminum tubing..., piers, and the world's most extensive selection of tube rings. Armed with a fully equipped machine shop, we are capable of turning out just about any custom job. Parallax Instruments...