| RefNo | DM/3/22 |
| Level | Item |
| Title | Optical Glass Committee, Technical data |
| Date | c.28 February 1826 |
| Description | Referred to in the minutes of the Optical Glass Committee meeting, 28 February 1826 (See DM/3/21). |
| Extent | 1 side |
| Format | Manuscript |
| AccessStatus | Open |
| AccessConditions | OPEN - but photocopying forbidden. |
| RelatedMaterial | See also CMB/1/13, CMB/69-71 |