US$ 39.95
showing how wheel-diameter ratio changes output speed and torque in belt-driven mechanical transmissions
250ml capacity Pear Shaped Separating Funnel
5% ±2 digit accuracy on a 3-1/2 digit LCD
8-inch polished metal dome
Formation of Rocks Teaching Model Lab Equipment and Supplies_Metal Labware showing how wheel-diameter ratio changesDepicts how igneous, sedimentary, and metamorphic rocks form and transform within the rock cycle, annotated for straightforward classroom identification.
US$ 39.95
US$ 14.00
US$ 20.00
US$ 14.00
US$ 14.00
US$ 20.00