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
Focuser adapter part#A35-503-TMB is needed to thread focuser into base.
Inside of base has M138x1 threads to thread tube adapter ring.
Delivered with: Starlight flat Base for 3,5" Feather Touch with leveling screws