2-Prong Single-Adjustable Universal Clamp with Boss Head, Large Lab Supplies_Stopwatches & Timers supporting both rheostat and potentiometer

supporting both rheostat and potentiometer use

Two pith balls suspended on unspun silk from a brass pillar

Four-socket E10 lamp holder pre-wired in series on a hard-plastic base with two 4mm banana terminals

providing the high-turns winding for transformer ratio and electromagnetic induction demonstrations

Pairs 75 by 50mm with 18mm thickness on an acrylic rectangular refraction block

2-Prong Single-Adjustable Universal Clamp with Boss Head, Large Lab Supplies_Stopwatches & Timers supporting both rheostat and potentiometerTwo prong single adjustable universal clamp with an integral bosshead and non slip vinyl sleeves, gripping burettes and flask necks from 12 to 45 mm on retort stand rods.