The 8401 Picomotor Rotary Mount has a minimum incremental motion around 0.1 mrad and an overall thickness of just 0.63 in. (16.0 mm). This compact stainless-steel motorized rotary stage can be used for a number of applications, including positioning wave plates and polarizers. Each rotary stage includes adapters for mounting components with either 1 inch (25.4 mm) or 1/2 inch (12.7 mm) diameters. It can also hold 1.5 inch (38.1 mm) optic using two retaining rings LP-2-RR (sold separately). For motorized beam-steering applications, use our 45° adapters. The 8401 is best for Optic adjustment. For MIM (guaranteed and repeatable step size), refer to other rotation stages AG-PR100P, 8410, and PR50.