NEWPORT rotation stage (only upper part) Description: nice HEAVY DUTY rotation mount. New in unopened bag with all original mounting screws and washers and ball supports. At sides it has some locking hinged tabs that lock it to the lateral of the original mounting base. In the last two pictures you can see the base it usually goes mounted to (right side) and this rotation stage at the LEFT side. This usually comes to mount on a mounting base which in turn goes on the breadboard, but maybe you can find it a good as it is. Measures: see pics (in mm). More info: The last 3 pictures show a used base (same model) I have available. The new one corresponds to first pic.