| RefNo | DM/3/21 | 
| Level | Item | 
| Title | Minute of a meeting of the Optical Glass Committee   | 
| Date | 28 February 1826 | 
| Extent | 2 sides | 
| Format | Manuscript | 
| AccessStatus | Open | 
| AccessConditions | OPEN - but photocopying forbidden. | 
| RelatedMaterial | See also CMB/1/13, CMB/69-71 |