US$ 149.00
and commutator assemblies for direct observation of each component
hung from a 3 mm top hole for classroom use
this life-size hanging skeleton model features flexible spine and moveable joints for hands-on skeletal system instruction
sample prep
Plastic-cased introductory electronics kit with 10 lamp holders+bulbs
Porcelain Mortar and Pestle Set Ag Mechanics and commutator assemblies for directSolid porcelain mortar and pestle set with an unglazed grinding surface for crushing powders, herbs, and laboratory chemicals to a uniform particle size.
US$ 149.00
US$ 25.00
US$ 35.00
US$ 111.30
US$ 50.00
US$ 35.00
US$ 50.00