Details of exhibit

Exhibition:
1906 Fifty-first Annual Exhibition of the Royal Photographic Society of Great Britain  
Exhibit title:
Comparison Photometer  
Exhibitor:
Adam Hilger, Ltd. 
Section:
Scientific and Technical Photography and its Application to Processes of Reproduction. By Invitation from the Council 
Exhibit No.:
[197A] 
Exhibit No. 2:
[2] 
Description:
Designed at the suggestion of the F. F. Renwick, Esq., for the measurement of Photographic Densities.
This is accomplished by the comparison of the density to be measured with an accurately worked wedge of neutral tint glass. The instrument is designed to read H. & D. densities direct from 0 to 4.2. 
Exhibit type:
Photograph 
Process:
[Not Listed] () 
Award:
none