Etchings with ruled line grounds (before 1852). Prepared as experimental trials of ground effect by ordinary mechanical means, no photo-etching involved. Steel plate (ruled on metal), 5" x 5". Plate marked 'Greig'.
Details
- Category:
- Photographs
- Object Number:
- 1937-458
- Materials:
- steel (metal)
- Measurements:
-
plate: 127 mm x 127 mm
- type:
- printing plate
- credit:
- The National Media Museum, Bradford
