Plain Still Head with B14 Thermometer Socket, 24/29 Flask and 24/29 Condenser Cones, Borosilicate Glass Diameter_7mm demonstrating magnet action

demonstrating magnet action

this electromagnet-driven pivoted-arm sounder on a wooden base produces the snap of early telegraph operation when current pulses the coil

Universal 2-input NOR gate module with red/green LED outputs and a printed truth table

capable of producing repeated sparks once the base is charged by friction

Stackable grid base on this polypropylene test tube rack holds 60 tubes up to 16 mm across a 9

Plain Still Head with B14 Thermometer Socket, 24/29 Flask and 24/29 Condenser Cones, Borosilicate Glass Diameter_7mm demonstrating magnet actionPlain still head in borosilicate 3. 3 glass features B14 thermometer socket and 24 29 connections for distillation temperature monitoring.