Three Varnished Steel Plates Marked With Parrallel Lines

Etchings with ruled line grounds (before 1852). Prepared as experimental trials of ground effect by ordinary mechanical means, no photo-etching involved. Three steel plates, in box, with rulings on surface varnish layer, 5" x 3 1/2".

Details

Category:
Photographs
Object Number:
1937-457
Materials:
steel (metal) and varnish
Measurements:
plate: 127 mm x 89 mm
type:
printing plate
credit:
The National Media Museum, Bradford