MIL-M-13331, MILITARY SPECIFICATION: MOUNT, TELESCOPE, M18A1 (22-MAR-1954) [NO S/S DOCUMENT]

MIL-M-13331, MILITARY SPECIFICATION: MOUNT, TELESCOPE, M18A1 (22-MAR-1954) [NO S/S DOCUMENT]., This specification covers a mount used to hold a panoramic telescope of the M12 Series for laying the gun in azimuth.