Concave Glass Mirror, 150mm Diameter, 150mm Focal Length Material_Bristle deflecting a pivoting cobalt-steel compass

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

outfitting classroom stations for sample transfer and dispensing

Uniform walls provide excellent strength against breakage

75A single-phase rheostat with cover-protected constantan winding on a 200x56mm tube and 4mm safety socket terminals

Concave Glass Mirror, 150mm Diameter, 150mm Focal Length Material_Bristle deflecting a pivoting cobalt-steel compassBuilt for maximum light projection demos, a wide 150mm concave glass mirror at 150mm focal length runs at f 1, capturing plenty of flux for vivid magnification and reflector style optics.