Measures 10-5/8" long. Threaded inside on both ends. Two 1/4" holes 7" apart on the bottom, 4-3/16" holes spaced 1-1/2" lengthwise and 1" apart the other way. Weight is 9 ounces. In good original condition. One of our customers advises that this is the OTA tube for the vintage Edmund Scientific 60mm Voyager refractor telescope made in the early 1980's. Thanks Preston.
