This is a parallax adjustment wheel for an Athlon Cronus GenII rifle scope. It has an outer lip that stops how far it can be pushed onto the turret. This leaves the yardage numbers easily seen. Mounting is sized for an m3 screw and nut. The inner diameter is about 34.5mm The
The numbers on the wheel, as shown in photo, are removed. I made a trial adjustment wheel for my son and he advised me that while the knob fit, the Athlon turret turned only a about a quarter turn and that the numbers also ran the wrong way, as I originally remixed this to fit my Vortex Venom. Deciding the numbers were of little use, I removed them in my final version.
I will entertain comments, requests, or suggestions. Cheers!
The author remixed this model.
I sized the parallax wheel for a Athlon Cronus GenII rifle scope, added an outside rim to the wheel to act as a stop, so that it would be stable and sit far enough away from the calibration numbers to see them easily and altered the mounting hardware to using an m3 screw and nut.