A Wheatstone bridge manufactured by Leybold’s Nachfolger. In the experiment different resistors can be used by a rotatable knob. This experiment was made by Leybold’s Nachfolger A.G. Cöln am Rhein and imported by Kipp & Zonen Delft – Holland. The experiment can be hanged to a wall. a similar experiment was made by Max Kohl as shown in the pictures.20,5 x 78,5 2,3 cm.
