Interchangeable Dial for Demonstration Meter, Model C Subcategory_Sensors and Probes clamping to bench edges for

clamping to bench edges for pulley experiments that need a fixed overhang off the worktop

and 6V-powered ignition light staging each step

deflecting visibly in the presence of a charged object to reveal both charge presence and polarity

and ring magnets with plotting compasses

this Brownlee-pattern apparatus gives a clean visual proof of the 2:1 stoichiometry of water decomposition

Interchangeable Dial for Demonstration Meter, Model C Subcategory_Sensors and Probes clamping to bench edges forHundred milliamp DC scale on a 315x115mm laminated panel with sealed shunt, dropping into the demonstration meter to convert it into a 0 100mA ammeter for medium current student circuits.