Frame with pivot bearings on support

For demonstrating the magnetic field of a current-carrying
conductor, may be used for mounting cylindrical bar magnet
DE410-1N to pivot with little friction between the two needle
bearings of the frame, the upper and lower brackets of the frame are insulated and have two 4-mm jacks each for connecting a power supply
Dimensions: 160x65 mm,
support: L=70 mm, D=10 mm