Semicircular Glass Block, 90 x 18mm Racks & Stands_Flask Stands allowing this tangent galvanometer to

allowing this tangent galvanometer to convert deflection angle into an absolute current reading

with both 4mm stackable sockets and screw terminals so leads wire in without an adapter to either bench standard

Fourteen-specimen solid materials kit in assorted shapes across brass

13-inch diameter

Topped with a large conductor sphere and a deflecting needle indicator

Semicircular Glass Block, 90 x 18mm Racks & Stands_Flask Stands allowing this tangent galvanometer toGlass semicircular block at 90 by 18mm, the slim half disc geometry letting beams enter the curved face along its radius for clean refraction angle and TIR observations.