Historical Lehigh Physics Laboratory Equipment
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Universal Avometer
First developed in 1923, this type of analog multimeter which measures DC/AC current and voltage resistance (Ohms), was manufactured by a British company.
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E/M Apparatus (ca. 1965) [left]
This e/m electron apparatus was used to determine an electron’s charge to mass ratio.
Single Pole Knife Switch [center]
Used to control the flow of electricity in a circuit, knife switches have been used in physics and other laboratories for decades.
Small Analog Multimeter [right]
This hand-held multimeter measures current, resistance, and voltage.
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Resistance Decade Box
This device, with its multiple switches, contains resistors of many values allowing the user to dial in any one of various discrete resistances. It was manufactured by the Leeds and Northrup Company.
