| Ref No | DS.SWH/4/PL/1/199/10 |
| Title | Calculated centres of weights |
| Date | 25 May 1886 |
| Description | Scale 1/2 in: 1 ft
Dimensions: (approx. 75x35cm) |
| AccessStatus | Open |
| AccessConditions | This plan is very fragile and requires Conservation attention before consultation |
| Format | 1 plan, tracing paper |