Ring And Ball Gravesand

Large Motor Generator: DC Motor mounted on a wooden base with terminals.

Line Shaft Unit: comprising steel shaft mounted in cast brackets with nylon bearings; the shaft has an aluminium V pulley, mounted on a wooden base.

Small Motor Generator: DC Motor mounted on a wooden base with terminals.

Searls Surface Tension Apparatus: searle's Surface Tension Apparatus is a precision torsion-wire balance used to measure the surface tension of liquids and…

Jaeger's Surface Tension Apparatus (Surface Tension Balance)

Thermocouple Bismuth Antimony: one bismuth & one antimony joined in V form at one end & mounted on a wooden board with copper connecting wires.

Thermocouple Simple: to wires of copper constant joined together at one end.

Thermopile Copper Iron: four each of copper & iron wires long joined together from 7 points; four on one side & three on the other, with brass connections on…