| Reference Number | TPC/5/6/171 |
| Title | Air Damper for Rising Handrail |
| Level | Item |
| Date | 13 October 1978 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D.14-413. Drawn by A H. Works number 5376. |
| Extent | 1 drawing |
| Series | Mole-Richardson (Stage & Studio Engineering) Ltd Drawings |