4.75" St. Louis Motor Demonstration Apparatus Handle Type_Wood sized so a class can

sized so a class can watch gas bubbles rise off each electrode in real time during electrolysis demos

these aluminum 4-inch overflow cans come in pairs for paired-station Archimedes-principle and density investigations

clamping to bench edges for pulley experiments that need a fixed overhang off the worktop

5-inch grounded brass disc

this lamp holder provides connection terminals for fast wiring into series and parallel student-built circuits

4.75" St. Louis Motor Demonstration Apparatus Handle Type_Wood sized so a class canExposes every moving part of a two pole armature rotating between permanent magnets on an open 4 inch plastic base, running on 3 6V DC to illustrate both motor and generator operation.