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Pentode, Western Electric 282A
Balance with two glass pans
Microscope, brass eyepiece
Voltmeter, multicellular electrostatic (A)
Sector, brass
pH meter, Model M
Planimeter no. 132
Ion chamber used by Millikan and Bowen
Radar switch tube
Microscope, monocular with wood box and keys
Galvanometer
Quadrant in wood case, brass
Telescope and scale
pH meter, Model G
Balance, chainomatic in case with weights
Ion chamber used by Millikan
Delta Wing test model
Compass with sighting element, brass
Magnetic relay for electronic switching
Microscope in wood box

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