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Scanning Electron Mi	Millimeter - Schall	Amperemeter - E. Rog	Amperemeter
Millimeter	Device for Magnetic	Electromagnetic mach	Electromagnetic mach
Electric alphabetic	Horizontal Galvanome	Barlow's Wheel-	Molecular Beam Epita
Inductive current g	Thomson Double Bridg	Mavometer	Mavometer
Milliammeter	Leybold	Voltmeter	Pellin (François Phi