Stepper Relay Module
Inventory NumberWJ0991
ClassificationOperant Conditioning Module
Subject
Dimensions7.7 x 17.5 x 8.6 cm, 2.2 lb. (3 x 6 7/8 x 3 3/8 in., 1 kg)
Accessories1 small black cylindrical platic piece.
Signedunsigned
Curatorial Remarksweight approximate written on front "5 6 Z"
Date: circa 1955
Accessories: WJ0978 is the other part of Skinner Exhibit #10.
Object number: WJ1010
