HISTORY OF CINEMA the camtographer; internal view of the apparatus built on the 1898 patent of Leonard Ulrich Kamm (UK); which was used both for shooting and for the projection of 350 or 550 frames on circular glass plate arranged in a spiral. The projection lasted from 30 to 45 seconds. Illustration from "The Photography" by PN Hasluck (April 1854 - May 7; 1931); an eclectic Australian technical manual author transplanted to the UK; a precursor of do-it-yourself in the most varied sectors. Italian edition; 1905