Spectroscope with camera in aluminium and brass
- maker:
- W Ottway and Company and
- Hammersley
Spectroscope with camera in aluminium and brass, signed by Hammersley, Islington, London and by W. Ottway and Co., Orion Works, Ealing, with wooden case. Listed as instrument no.23 at the Solar Physics Observatory, South Kensington before being acquired by the Norman Lockyer Observatory, Sidmouth Devon.