Description

Four-piece polypropylene funnel set pairs 2

Wooden-frame abacus on a 13

demonstrating how AC input is converted to pulsing DC output

Simultaneous AC and DC output on this low-voltage power supply

Bicycle dynamo on a 4mm-socket base with a parallel-wired MES lamp and 2

Hair Hygrometer, 105mm Diameter Size_13 Inch Four-piece polypropylene funnel set pairsMetal cased hair hygrometer on a 105 mm dial reading 0 to 100 percent relative humidity in 1 percent divisions through hair fiber response, running battery free for direct room condition reads.

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Hair Hygrometer, 105mm Diameter Size_13 Inch Four-piece polypropylene funnel set pairs

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