Plain Still Head with B14 Thermometer Socket, 29/32 Flask and 19/26 Condenser Cones, Borosilicate Glass Material_Iron Four 153 x 76mm plates

Four 153 x 76mm plates - each holding 98 iron-rod plotting compasses in a 14 x 7 matrix - assemble flat or as the faces of a cube to display 2D and 3D field-line patterns

and instructions for general electronics diagnostics

used to extend the activity-series comparison and to introduce the chemistry of the lead-acid battery

25 inch ceramic bar pair simplify pole identification

Life-size numbered human skull with removable skull cap exposes the cranial cavity

Plain Still Head with B14 Thermometer Socket, 29/32 Flask and 19/26 Condenser Cones, Borosilicate Glass Material_Iron Four 153 x 76mm platesPlain still head in heavy duty borosilicate 3. 3 glass features B14 thermometer socket and 29 32 connections for distillation temperature monitoring.