St. Louis Demonstration Motor Racks & Stands_Test Tube Racks mounted on a 5-inch stainless

mounted on a 5-inch stainless steel rod with nontoxic powder-coated zinc alloy

This unique training system houses five different plug-in simulator modules

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

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

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 mounted on a 5-inch stainlessUsed 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.