Gravesande Ring and Ball Apparatus Subcategory_Pitchers Used to interface a 4mm-socket

Used to interface a 4mm-socket instrument to a bare-component test point

One-meter single-wire potentiometer with 24 SWG constantan wire stretched along a millimeter scale

transparent housing revealing the hydropower conversion inside the casing

Test tubes in borosilicate glass hold 25mL with inverse scale graduations for specialized measurement and chemistry procedures

Gravesande Ring and Ball Apparatus Subcategory_Pitchers Used to interface a 4mm-socketCaptive 19mm brass ball on a rod mounted Gravesande ring, passing freely through the ring at room temperature but halted by the ring after flame heating expands the metal.