Photographic enlargement showing the construction of the 26-inch equatorial refracter for Johannesburg Observatory
- Made:
- 1928 in Newcastle upon Tyne and England
- photographer:
- Sir Howard Grubb, Parsons and Company
One of six photographic enlargements showing the construction of the 26-inch equatorial refracter for Johannesburg Observatory, prepared from negatives lent by Sir Howard Grubb, Parsons and Co.