The original 16mm and 35mm cameras provided by Stromberg-Carlson were not pin-registered. In consequence, the film jittered on projection which was very noticiable on animated line drawings.
By the late 1960s, Sherrill Martin of Joseph. Kaye & Co provided a service to a number of sites (MIT and Lincoln Labs in particular) bringing a pin-registered 35mm Bell & Howell and later a Flight Dynamics 35mm camera, FR207 to the site when a final product was required.
The Atlas Computer Laboratory replaced their camera with a pin-registered Vought M-1 camera with both 16mm and 35mm movements in the Autumn of 1971.
Vought 16/35mm M-1 Pin-registered Camera