Triple-Range Moving Coil DC Voltmeter, 0-3V / 0-15V / 0-30V Heat & Thermodynamics_Energy Transfer & Engines all faces polished and packaged

all faces polished and packaged in a wooden storage box

Wooden baseboard with millimeter scale

letting students compare four densities by mass alone while the volume is held constant across the set

5 inch premium dynamics carts with nylon ball-bearing wheels and end hoops for elastic and inelastic collisions

and internal organelles for detailed protist biology teaching

Triple-Range Moving Coil DC Voltmeter, 0-3V / 0-15V / 0-30V Heat & Thermodynamics_Energy Transfer & Engines all faces polished and packagedTriple range moving coil DC voltmeter at 0 3V, 0 15V, and 0 30V with an inclined face, sized to span single cell up through stacked battery voltages on a single classroom instrument.