| RefNo | HS/10/210 | 
| Level | Item | 
| Title | Letter, from Samuel B. Howlett to Sir John Herschel, dated at 83 1/2 Pall Mall | 
| Creator | Howlett; Samuel B. (1794–1874); surveyor; inventor | 
| Recipient | John Frederick William Herschel | 
| Date | 22 October 1838 | 
| Description | Autograph letter signed by sender. Has made a barometer for his own use, which requires no correction for zero or temperature. Would like John Frederick William Herschel to see it. | 
| Language | English | 
| Extent | 2pp | 
| Format | Manuscript | 
| Place origin | 83 1/2 Pall Mall, London | 
| Origin coordinates | 51.5058, -0.1363 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel10860 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |