| Reference Number | TPC/3/18/1 |
| Title | Diagram of Connections for Diode Board CD 200/105 |
| Level | Item |
| Date | 1978 |
| Description | Evershed Power-Optics Ltd drawing number X14196 issue B. Original date 18 April 1978. |
| Extent | 1 drawing |
| Series | The National Theatre Lighting Hoists and Operating Procedure for the Lighting Hoist Control System - Olivier Theatre |