In article ,
(B. Iten) wrote:

Anyone know where to get a good eye ball vent for the instrument
panel? I found a couple at aircraft spruce but they are the type that
you need to manually flip the butterfly plate inside instead of
rotating the outer knob to open and close the vent. Knauff said that I
should contact M&H but I did not receive a response from them for a
factory style Schemp ball. Anyone have any ideas?
Thanks
Brian

Larry Mansberger (Mansberger Aircraft) at Minden installed one for me
several years ago. A call to him might yeild his supplier.

Ken