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Slide Wire Rheostat

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These variable resistance apparatuses are functional for experiments requiring varying degrees of electrical resistance and are great for demonstrating the properties of resistance being proportional to wire length.  Each is mounted on an air core insulated ceramic tube with sliding contacts and connections at both ends. #1820-A  Rheostat, Slide Wire. . .5.0 Ohms. . .3.0 Amps #1820-B  Rheostat, Slide Wire. . .10 Ohms. . .2.0 Amps #1820-C  Rheostat, Slide Wire. . .20 Ohms. . .2.0 Amps #1820-D  Rheostat, Slide Wire. . .50 Ohms. . .2.0 Amps #1820-E  Rheostat, Slide Wire. . .50 Ohms. . .1.5 Amps #1820-F  Rheostat, Slide Wire. . .200 Ohms. . .1.25 Amps #1820-G  Rheostat, Slide Wire. . .2000 Ohms. . .0.3 Amps