BA35FL—Base 3.5" flat with leveling screws

Description Flat base with leveling screws for 3.5″ diameter Feather Touch focuser Outside dimension is 6″ square Base comes complete with all mounting hardware. The base has a mounting hole pattern of 5.25″ to center. This base threads into our tube adapter ring, (A35-503-TMB) which has M138x1 threads that goes with our 3.5″ Feather Touch Focuser and must be purchased separately.