Macro Focusing Rail Novoflex Castel-L Standard
This sells new for $289 as of 1/24/2026.

Used - Condition 9
This Novoflex Castel-L Focusing Rail Standard unit has a solid build and features fine and coarse adjustment knobs.
The lens mounts to the carriage, which rides on the rail, which mounts to a tripod. This set-up enables you to make very small and controlled adjustments to the position of the lens (and the focus of the image) without changing magnification of the image.