Johnson's Actinometer (Autotype)
- Made:
- 1910-1920
Johnson's actinometer (autotype), (single-tint print meter), 1910-1920.
Details
- Category:
- Photographic Technology
- Object Number:
- 1929-277
- Materials:
- cardboard, felt, glass, paper (fibre product), tin plated and wood (unidentified)
- Measurements:
-
overall: 36 mm x 34 mm x 42 mm, .058 kg
- type:
- exposure meter and actinometer
- credit:
- The Autotype Company Limited
