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

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

Two pith balls suspended on unspun silk from a brass pillar

with a slide-bar carriage carrying a phosphor-bronze contact and three binding posts

Corrosion-resistant twelve-piece stainless steel slotted mass set totaling 1110 grams from 1 to 500 gram pieces

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.