JMI Telescopes Focuser Backup Plate-Flat Tweet Description JMI Focuser Backup Plate is flat and cut out to seat between a focuser's base and a Cassegrain telescope to insure proper installation of the focuser. Details Additional Category Tags: Accessories, Focusers Category: Optics Manufacturer Catalog Number: ADPTBUPF Product Manufacturer: JMI Telescopes Subcategory: Telescopes
