We offer Precision Rotary Stage 7R129 with a micrometer screw. The fine motion range is 15° with resolution of 1 arcmin. For coarse adjustment release the fixing screw and turn the platform. The platform has mounting holes M6, M4. Precision rotary stage has an aperture M30x1 with clear aperture of 25 mm. Two retaining rings with 1 inch clear aperture are included. To close aperture in the platform an (included) insert platform could be threaded which additionally has clearance hole and M6, M4 holes.. Precision rotary stage can be fastened horizontally or vertically using M6 screws.
Short video demonstration where vacuum compatible version of the stage is used as a part of goniometric system: