EISCO Ampere Rule Apparatus
(1) Apparatus, (1) 45mm compass, (6) 16mm compasses
This apparatus allows student to study the magnetic field around a wire. Heavy brass wire with terminals is arranged on a clear plastic base. Also included are 1 each 45 mm compass and 6 each 16 mm compasses. Dimensions 17.5 x 7.5 x 10 cm approximately.