| Reference number | NLB/72/139 |
| Alternative reference number | NLB/72 p72 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Director of the National Physical Laboratory |
| Date | 17 April 1929 |
| Description | Informs the Director that the Royal Society would be pleased to have the following exhibits offered for the May Soiree:
1. Flutter of model aeroplane wings by Mr Frazer and Mr Duncan
2. Measuring thickness of films by Mr Rolt and Mr Barell
3. (a) Manganese and (b) Age-hardening of aluminium alloys by Dr Gayler and Mr Preston. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |