Low-Frequency Generator Stock Type_Build to Order Plastic-bodied wave apparatus with eccentric

Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns

Metal-base one-meter potentiometer with 24 SWG constantan wire stretched along a millimeter scale

and 26 SWG - sized as the matched replacement set for the PH0730 sonometer

deflecting visibly in the presence of a charged object to reveal both charge presence and polarity

Low-Frequency Generator Stock Type_Build to Order Plastic-bodied wave apparatus with eccentricBattery or mains low frequency generator producing sine, square, and triangle waveforms from 0 to 2 kHz, in a 200x125x60mm portable case for driving LED bridges and waveform demonstrations.