Rigid dovetail clamp that fits to all dovetail rails with Vixen GP connectivity. It has similar measuerments as the GP/EQ mounts.This dovetail clamp enables you to connect GP prism rails to mounts or other bases without this standard, e.g. the GiRo mount or self-engineered systems with flat mounting base.Technical details:-- Dovetail clamp, fitting to all Vixen GP standard dovetail rails-- Flat mounting base with two bores for screws (35 mm distance).-- Additional 1/4" photo thread in the middle (e.g. to mount it on photo tripods).