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This apparatus consists of an arm restrainer, a pulley system, and a marker for a kymograph attached along the length of a wooden base. The components of the restrainer are made of brass, steel, and leather. The arm restrainer consists of two parallel metal poles elevated on a stand at each end. There is a pulley at one end of the wooden base opposite the arm restrainer. A wire extends from the end of the arm restrainer to the pulley. The kymograph stylus is attached to the top of the arm restrainer perpendicular to the length of the wooden base and restrainer.

Accession Number: 2011.psy.12

Alternative Name:

Primary Materials: Wood, Wire, Leather, Brass

Markings: Old Inventory Number = psy 036.

Dimensions (cm): Height = 15, Width = 11.5, Length = 51


Used for measuring changes in the amount of muscular contractions. It immobilizes all parts of a member (arm or finger) except for the one to be measured.


Good. Peeled label on top of wooden base.

Associated Instruments: 2011.psy.11; 2011.psy.13, 2011.psy.18


Date of Manufacture:


Dept of Psychology, U of T; removed from Psych storage September 28, 2011.

Additional Information and References:

Historical Notes: