Objekt 9
Declination pin
Description
The magnetic needle, freely mounted on an axis, assumes a certain position at each location due to the action of the earth's magnetism. Here, however, it is attracted by the two large horseshoe magnets.
Object description
probably France, 1st half of 18th c.
Iron, paper with scale, wooden case
Inscription: Declinatio Basileae 22 gradus a Junio ad / Augustum fuit / Anno 1805 / ab Augusto gradus 21
According to the inventory "Physicksaal" 1757: "A 10 French inch long declination needle in a wooden case", No. 135
Depositum Institute of Physics of the University of Basel, Phys. 7.
Inv. 1986.445.