Decade Capacitance Box, 0.1-1 µF, 63V Capacity_600mL setting UV sanitization cycle duration

setting UV sanitization cycle duration and restoring full cabinet function when the original switch fails under classroom use

this Wimshurst generator builds a visible high-voltage spark

Iron anode-and-cathode pair fitted into a rubber bung for the student electrolyzer

Adjustable mass on one fork shifts its 440Hz pitch by a few hertz

and a removable cord post

Decade Capacitance Box, 0.1-1 µF, 63V Capacity_600mL setting UV sanitization cycle durationDecade capacitance box stepping 0. 1uF to 1uF in 0. 1uF increments at plus or minus 5% on 63V, the microfarad bridge decade for RC time constant work and audio frequency timing circuits.