Newport Corp. is offering a six- and 12-position filter wheel that was designed for 1-in. neutral density filters and other optical components. It provides toolless filter wheel change and optical access to all six filters, or 12 filters in the dual-filter configuration. The base is rigid but compact, and users can choose among 1-, 2- and 3-in. optical heights. Users also can post mount for unlimited positioning options. High-precision spring-loaded indexing provides smooth, repeatable and wobble-free operation, while the soft retaining rings cushion and protect the optical component. The company says the device can be easily integrated into many compact optical systems.