12-Piece Polypropylene Density Cylindrical Bars Set with Wooden Storage Base Material_Cast Iron Set of eight steel tuning

Set of eight steel tuning forks tuned to scientific pitch (C4 = 256 Hz) for classroom work on sound waves

Regulated dual AC/DC power supply displaying voltage and current on independent digital readouts

carrying ion flow between oxidation and reduction half-cells in galvanic cell setups

microwave-safe

Illuminated three-body orbital model of the Sun

12-Piece Polypropylene Density Cylindrical Bars Set with Wooden Storage Base Material_Cast Iron Set of eight steel tuningWooden block housed polypropylene density kit of 12 bars at identical 0. 5 inch diameter with varying lengths, a low density polymer reference for mass volume density graphing.