2-Prong Single-Adjustable Universal Clamp with Boss Head, Large Lab Supplies_Stopwatches & Timers Four-socket E10 lamp holder pre-wired

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

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

Two pith balls suspended on unspun silk from a brass pillar

supporting both rheostat and potentiometer use

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 Four-socket E10 lamp holder pre-wiredTwo 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.