Short Wave Sportfishing wrote in
:

tonight at 8:00 PM - The Antikythera Mechanism - the famous astrolab
found in an ancient Greek wreck in the Med.



I think those Greeks pulled a fast one. That looks like the rotary intake
valve on a SeaDoo 550 twin, the standup model. Somebody's jetski sunk....

It could also be the rotating shutter on a Cinemechannica 35mm movie
projector, too! See the 4 quadrants, two opaque while we jerk in the next
frame opposite two open to send the light on to the lens?