The Whadda WSG110 Wonky Wire is used to test the steadiness of your hand. It utilises a circuit with an oscillator that has a very high oscillation frequency of about 3kHz (3000 cycles per second). As you try to trace the outline of the wire with the loop, the slightest touch will cause a tone to sound. The variable resistor can be used to change the pitch of the tone. * Power supply: 9 V battery (not included) * Dimensions: 85 x 76 x 120 mm / 3.3 x 3.0 x 4.7" https://elecena.pl/product/27149310/whadda-wsg110-madlab-electronic-kit-wonky-wire 2024-11-06 https://elecena.pl/product/27149310/whadda-wsg110-madlab-electronic-kit-wonky-wire 2025-01-01