Eisco has been designing, producing and supplying high quality lab equipment for education and industry since 1968. Eisco presents tangent galvanometer. The tangent galvanometer is used to demonstrate how a current loop generates a magnetic field. The tangent galvanometer consists of an acrylic hoop 12.7 cm in diameter wrapped with 2 coils of copper wire 3 binding posts, which allow connections to 5, 10 or 15 turns; and a compass.