On 09/06/2013 21:54, Graeme Wall wrote: > I did think of that but I can't for the life of me see why the RA would > need specialist projectionists in that era. Would be part of the job > for a cameraman. The term Cinematographer is still used in the film > industry for the principal cameraman. Film cameraman seems most likely. There would be a need for films for training, records of equipment trials and PR purposes. Much less demand for projectionists, perhaps a large training establishment or headquarters (where film of secret trials might be viewed) could have one.