Magnetic field indicator type A and type G

Item numbers: 1158 [Type 1 (G)], 382 [Type 2 (A)]

Construction:

Both types are 50 mm long, 12 mm wide and rounded at the ends with a radius of 25.4 mm.
rounded at the ends. They each consist of three layers with a total thickness of 0.15 mm. The middle
layer (0.05 mm) consists of a magnetically soft Ni-Fe alloy with high relative permeability.
permeability. The outer layers (0.05 mm) consist of non-magnetisable material.

A special feature of these test bodies is that the middle layer of the parallel to the long side
has slits of 42mm length, which are evenly distributed over the width. They
They run through the entire cross-section, but are of different widths.