| Reference Number | TPC/5/7/16 |
| Title | National Upper Scenery Hoists - System Block Schematic |
| Level | Item |
| Date | 23 July 1975 |
| Description | Evershed Power-Optics Ltd drawing number V453[5] issue A. Drawn by D U T. |
| Extent | 1 drawing |
| Series | Evershed Power-Optics Ltd Drawings |