02RM001A regarding analogues of other manufacturers is existence of the  Ø11 mm aperture in the center of rotation stage while it has very compact dimensions  46x65 mm together with its high precision, there is no need to use extra adapter plate for mounting since there are mounting holes on bottom.

• Worm gear design;
• Ø11 mm clear aperture in the center ;
• Very compact design 46x65 mm ;
• Resolution 3 arcmin