- Creator:
- Emil Otto Hoppé, 1878–1972, British
- Title:
- Magnetic Clock at Greenwich Observatory, London
- Date:
- 1929
- Materials & Techniques:
- Gelatin silver print on photographic paper
- Dimensions:
- Sheet: 4 × 2 1/2 inches (10.2 × 6.4 cm)
- Credit Line:
- Yale Center for British Art, Gift of Graham Howe
- Copyright Status:
- © Estate of the Artist
- Accession Number:
- B2017.41.44