Advantages of Standa Rotation Stage 7R174-11 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. There you could see examples of stacked stages from series 174 together with 7R174-11:
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3UBP-03 Universal Base Plate is required to fix the stages to a flat surface e.g. optical table. The stage is made with two M3 mounting holes in it`s base for direct mounting - please see the drawings.