104-inch grindng tool on 200-inch disc
1938 January 3
- Title
- 104-inch grindng tool on 200-inch disc
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Identifier
- 10.19-44
- Dates
- 1938 January 3
- Extents
- 1 photographs
- Abstract
- Depth of concavity 3.25-inch. Palomar.