Bob's Knobs replace the stock collimation screws on SCTs and Newtonians with hand-turnable knobs, so you can collimate without tools. Sets are made for specific Celestron and Meade SCTs — including Celestron 8", 9.25" and 11" models in standard, metric, Fastar and EdgeHD versions — plus Meade Lightbridge primaries, secondary mirrors and replacement springs. Part of Telescope Collimation Tools.
