Cinemagazine items: A collapsable polypropylene dam deals with the need for irrigation in normal weather conditions and collapses to reduce pressure under flood conditions; a helical extrusion machine makes wire economically; the Cerebral Function Monitor monitors patients during and after surgery more economically and better than the EEG; REMCALC - Relative Motion Collision Avoidance Calculator helps large ships avoid accidents in heavy traffic areas.
How to watch
In ACMI's collection
Black and White
16mm film; Access Print (Section 1)