1-1-10 ampere shunt
Date: late 19th-early 20th Century
Inventory Number: 1997-1-1075
Classification: Shunt
Subject:
Maker: Weston Electrical Instrument Corporation (founded 1888)
Cultural Region:
Place of Origin:
Dimensions:
9.4 × 16.8 × 13.2 cm (3 11/16 × 6 5/8 × 5 3/16 in.)
Description:
Shunt apparatus consisting of shunt coils placed in a ventilated wooden box with four hard rubber binding posts and four brass binding posts marked with values of ".1," "1," "10," and "+." (each set).
Signedon plaque: 1-1-1- / AMPERE SHUNT / FOR / WESTON STANDARD / MILLI-VOLTMETER N93155 / MADE BY THE / WESTON ELECTRICAL INSTRUMENT CO / NEWARK. N.J. US.A.
FunctionShunts like this one are used to divert the electric current measured by a meter, in order to protect it and extend its range. This particular one has three ranges, either 0.1, 1 or 10 Amps, depending on which binding posts are connected.
The plate indicates that it was for Weston Standard Milli-Voltmeter.
The plate indicates that it was for Weston Standard Milli-Voltmeter.
Curatorial Remarksattached tag reads: unmounted for inspection plate: for Weston Standard Milli-Voltmeter No. 3155