Description

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

and 0-50 psi / 0-3

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

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

4.75" St. Louis Motor Demonstration Apparatus Handle Type_Wood this lamp holder provides connectionExposes 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.

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4.75" St. Louis Motor Demonstration Apparatus Handle Type_Wood this lamp holder provides connection

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