Plain Still Head with B14 Thermometer Socket, 24/29 Flask and 24/29 Condenser Cones, Borosilicate Glass Diameter_7mm this electromagnet-driven pivoted-arm sounder on

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

Microwavable and autoclavable

six steel wires carrying 20 beads each for hands-on instruction in counting

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

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

Plain Still Head with B14 Thermometer Socket, 24/29 Flask and 24/29 Condenser Cones, Borosilicate Glass Diameter_7mm this electromagnet-driven pivoted-arm sounder onPlain still head in borosilicate 3. 3 glass features B14 thermometer socket and 24 29 connections for distillation temperature monitoring.