plate holder
Date: 1880 - 1900
Inventory Number: 1997-1-0750d
Classification: Photographic Plate Holder
Dimensions:17.5 × 17.4 × 1.5 cm (6 7/8 × 6 7/8 × 9/16 in.)
box: 12.7 × 24.8 × 19.1 cm (5 × 9 3/4 × 7 1/2 in.)
Description:
A crude metal plate holder, perhaps for glass plates, which then were inserted in a slide projector. There are two channels running parallel on either side of the window. Most likely used with the accompanying goggles in psychology experiments. See #1997-1-0750d and e.