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Ballistic Mirror Galvanometer (Carpentier)

University College

An elongated horseshoe magnet is mounted on a vertical wood backing. The magnet is protected with a modern plexiglass case (later addition – not shown in photographs). The mirror is suspended inside the centre of magnet by brass brackets at either end. The entire piece is mounted on a wooden stand with connected terminals.

A removable wooden lid with a flat glass window attaches to the case body with metal hooks.

Accession Number: 2009.uc.14

Alternative Name:

Primary Materials: Metal, Glass, Wood


On the removable lid: a small brass plaque has the following inscribed in script: “Ateliers Ruhmkorff, J. Carpentier, Ingr. Constr. À Paris”.

Old Inventory Number = uc14a (galvanometer), uc14b (lid).

Dimensions (cm): Height= 53, Width= 21, Length= 21


Used for making precision measurements of electric instruments.

Condition: Good.

Associated Instruments:


Ateliers Ruhmkorff, J. Carpentier, Ingr. Constr. À Paris

Date of Manufacture: c.1895


Dept. of Physics, University of Toronto.

Stored at University College

Additional Information and References:

Historical Notes:

Galvanometer is labeled 2009.uc.14.a. The wooden frame is labeled 2009.uc.14.b.