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98 items

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/aa7a4c33b1d3f6655fa5a89ef577b60b.JPG image/jpeg thumbnail

AC Voltmeter

0-3 Volts AC Type 486
https://digital-grinnell.nyc3.digitaloceanspaces.com/GrinnellCollegePhysicsMuseum/Images/em_461_welchVoltmeter.JPG image/jpeg thumbnail

DC Voltmeter

DC Voltmeter 0.0 to 7.5 Volts Cat. No. 3057K, Serial No. 37257