US$ 17.95
Twelve-ball drilled set in a foam-lined plastic case with two each of aluminum
and 38mm lens holder - an inexpensive starter platform for image-formation experiments
and marble for hands-on texture
and measuring powders and granules
Mild Steel Block Calorimeter, 1kg, 3.5 x 1.75" Prong_3 Twelve-ball drilled set in aHolds an immersion heater and thermometer in a 1kg mild steel cylindrical block, 3. 5 inches tall by 1. 75 inches diameter, for determining specific heat of steel by electrical heating.