Fifteen rock samples of varying magnetism, investigated by Prof. Koenigsburger Fifteen rock samples of varying magnetism
Theodolite by Meyerstein, c. 1850, adapted for observatory work Theodolite by Meyerstein, c. 1850, adapted for observatory work 1850
Dip inductor magnetometer by Schulze with box, c. 1913 Dip inductor magnetometer by Schulze with box 1913
Circular wooden box, thermometer, two scopes, wooden and brass parts and box containing scope, silk thread and other parts Circular wooden box containing objects 1840