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

soot-deposition

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

supplying the third-color short-reach line in high-current 4mm-socket bench-circuit wiring

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

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.