US$ 41.00
Standard rheostat at 2
Sliding-top wooden box 7 x 2 x 1 inches
Rotary-knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections
and lightning rods
Simple Manual Motor Model with 2 Magnets, 5.5" Pack Size_100 Standard rheostat at 2Hand cranked simple motor model on a 5. 5 inch base with two labeled magnets and 4mm sockets, demonstrating magnet action, induced current, and the alternator principle with stationary inductors.
US$ 41.00
US$ 129.00
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US$ 26.95
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