Thanks Markus,
Trying to get this as accurate as possible based off just using reference photos (not much out there) & scaling them for size with really no known dimensions for this part. I tried to match up the view as close as possible & I did go back & shortened the slot by .5 mm which looks better but is tough to get the exact angle of rotation. If I had a real one in hand to measure this would be easy to make a replica.
The counterbore that the stylus brush would fit into is drawn at 10 mm with some clearance. This is based off of reference photos & information that has been out there in other discussions & was used to determine most of the scale for the part. If you have exact dimension of the stylus brush diameter, the model could easily be changed to accommodate those if need be.
Any input would be greatly appreciated.