Is there a drawing for the FW5 or FW7 - STX series? I'm looking for the specific dimension of the filter wheel's thread.
Mr. Lee, The adapter that bolts on the wheel is 3" x 24 TPI. http://diffractionlimited.com/product/stxstxl-mounting-plate/ What are you trying to attach to the wheel, there might be another suggestion. Regards Tim