Edging plug for 200-inch disc on 48-inch machine, using silicon carbide grinding wheel
1937 April
- Title
- Edging plug for 200-inch disc on 48-inch machine, using silicon carbide grinding wheel
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Identifier
- 10.19-38
- Dates
- 1937 April
- Extents
- 1 photographs