projection lens
Datecirca 1900
Inventory NumberWJ0243
ClassificationLens
Subject
Maker
German
?
Cultural Region
Dimensions12.6 x 15.5 x 16 cm (4 15/16 x 6 1/8 x 6 5/16 in.)
Material
DescriptionLarge lens fixed to a square piece of steel. Was problably fixed to a window or screen of some sort. The focus is made with a rack and pinion system put in motion by a screw.
Signedunsigned
FunctionStudying visual sensations and demonstrating lens accommodation.
ProvenancePsychology Department, William James Hall, Harvard University.
