Self-Centering Lens / Optics Mount 4SCML-4 reliably centers and securely holds round optics and cylindrical objects. This device is particularly valuable when lenses of different diameters are being used interchangeably, as repeated centering at constant height is necessary. The Self-Centering Lens/Optics Mount 4SCML-4 accommodates optics up to 101.6 mm and is oversized to provide easy finger access for inserting and remaining optics. When released the three arms grip the lens, automatically centering the lens within the holder. The Self-Centering Lens/Optics Mounts 4SCML-4 can mount on STANDA Posts for easy adjustment of vertical height and azimuthal angle.