| Reference Number | TPC/5/7/66 |
| Title | Schematic Diagram National Lower Theatre System Rear Stage Wagon Revolve |
| Level | File |
| Date | 18 April 1974 |
| Description | Evershed Power-Optics Ltd drawing number X12725 issue A (original issue). Drawn by C A W. Two copies, one provisional and one annotated. |
| Extent | 2 drawings |
| Series | Evershed Power-Optics Ltd Drawings |