US$ 130.00
deliberately using non-standard graduations to build empirical reasoning
5% ±2 digit accuracy on a 3-1/2 digit LCD
dimensioned to hold a pair of 150mm (6-inch) bar magnets safely apart from other steel apparatus while preserving the polar alignment of each
using metal bearings to minimize friction in uniform-acceleration and Newton's-second-law work
Thermal Conductivity Star Chemistry deliberately using non-standard graduations toFour metal conductivity star with copper, brass, aluminum, and iron rods radiating from a central heated disc, letting students see conduction rate differences in one view.
US$ 130.00
US$ 100.00
US$ 101.40
US$ 135.00