10-Piece Solid Brass Slotted Mass Set Waves & Oscillation_Sound & Resonance the slightly thicker stock holding

the slightly thicker stock holding a stronger field than the 75 x 10mm model and shipped with steel keepers between sessions

Turning the hand crank walks students through every stage of the 2-stroke gasoline firing cycle on a 14-inch model

700-microfarad electrolytic capacitor in an ABS module with 4mm sockets

Built for biology dissection work

10-Piece Solid Brass Slotted Mass Set Waves & Oscillation_Sound & Resonance the slightly thicker stock holdingPrecision machined ten piece solid brass slotted mass set totaling 1100 grams from 10 to 500 gram pieces, displayed on a plastic and metal rack with a carrying handle for transport.