Aluminum Calorimeter Inner Vessel with Parallel Sides, 4 x 3" Lab Supplies_Thermometers Six-range AC/DC moving-coil voltmeter at

Six-range AC/DC moving-coil voltmeter at 3/10/30/100/300/500V with a toggle for AC or DC mode

this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations

Erlenmeyer Flask with a 500mL capacity and narrow neck is made of heavy-duty borosilicate 3

Sliding-top wooden box 5 x 2 x 1 inches with a recess sized for a pair of 100mm (4-inch) bar magnets plus their keeper

Aluminum Calorimeter Inner Vessel with Parallel Sides, 4 x 3" Lab Supplies_Thermometers Six-range AC/DC moving-coil voltmeter atLow mass aluminum inner vessel at 100 by 75mm with parallel sides and rolled rim, its small thermal capacity letting most heat transfer go to the sample during calorimetry work.