Class B Burette with Glass Key Stopcock, 100mL, 0.2mL Graduations, 30.5 inch, Borosilicate Glass Neulog_Accessories Push-button engagement on a hand-cranked

Push-button engagement on a hand-cranked single-sided cone clutch

Open-frame demo motor with two opposing coils on a spinning axle and 4mm banana inputs

Frosted glass gas jar cover measures 2

Economy Hope's apparatus demonstrating the anomalous expansion of water near 4°C as thermometers at different heights register densest water sinking while colder water rises

Class B Burette with Glass Key Stopcock, 100mL, 0.2mL Graduations, 30.5 inch, Borosilicate Glass Neulog_Accessories Push-button engagement on a hand-crankedClass B burette in borosilicate 3. 3 glass holds 100mL with 0. 2mL graduations and glass key stopcock for titration and volumetric analysis.