COVID-19 Update (May 21st) — While our offices remain closed to the general public, Musson has resumed selected operations in compliance with county guidelines. Non-contact pickup is available for customers who place their order online or by email with our sales/rentals team.
While most of our team continues to work remotely, select employees have their direct extension forward to their cell phone. If unavailable, you can leave a voicemail. In an emergency, please contact us at COVIDfirstname.lastname@example.org or by leaving a voicemail in our general mailbox, which is closely monitored.
Primarily used in full size Source Four ERS fixtures as one of the two screws which attach the front barrel assembly to the reflector housing, the other screw is the Lens Tube Focus Knob (accessories tab). Also used to hold the lens tube in place for 5° and 10° fixtures, or for fixtures with a heavy front load (such as a color scroller).