Wooden Meter Lever with Fulcrum Base and 100g Weights Lab Equipment and Supplies_Plastic Labware sliding through a full octave

sliding through a full octave from C5 (521Hz) to C6 (1024Hz) for hands-on comparison of length to fundamental frequency

a smaller-range counting tool for introductory arithmetic and place-value work

green) and three secondaries (cyan

cushioning glassware against the powder-coated zinc body

this low-current 2mA buzzer on a demonstration base sounds whenever current flows through the closed circuit

Wooden Meter Lever with Fulcrum Base and 100g Weights Lab Equipment and Supplies_Plastic Labware sliding through a full octaveOne meter wooden lever graduated in centimeters on a knife edge fulcrum base, supplied with two sets of 100g weights for experiments on torque, mechanical advantage, and moments.