St. Louis Demonstration Motor Racks & Stands_Test Tube Racks dimensioned to drop into the

dimensioned to drop into the PH0652 optical bench for hands-on study of Malus's law and crossed-polaroid extinction

used to demonstrate capacitance and the discharge of stored static charge

this two-gap Wheatstone bridge is the standard student apparatus for resistance comparison and verification

this dual-cell model pairs plant and animal cells side by side to highlight cell wall

St. Louis Demonstration Motor Racks & Stands_Test Tube Racks dimensioned to drop into theUsed to teach motor operation through the classic St. Louis open frame, this demonstrator exposes coil, brush, and commutator assemblies for direct observation of each component.