Ferguson Wedge Density Meter for Photographic Plates

Made:
1911
maker:
Ferguson
Ferguson Wedge Density Meter for Photographic Plates

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group
©The Board of Trustees of the Science Museum

Ferguson wedge density meter for photographic plates, 1911, in wooden box.

Details

Category:
Photographic Technology
Object Number:
1938-117
type:
densitometer
credit:
Ferguson, Mrs. W B