| Description | A detailed description of the drum revolve and all its constituent parts, such as doors, clamps, loading platforms and interlocks. The last section 'Drum Revolve Performance' consists of a table of test results and operating mechanisms. A note (branded 'Theatre Projects') attached to the front of the item states, 'photostat sent to Alan Cook TSA [Tele-Stage Associates] 1-4 Concept 4 [onwards] Operation & Description.' |