Fig. 620 represents a galvanometer with all these conveniences. The frame for the wire is merely slipped between two wooden cleats on the upper board.  Wrapping the Wire. a Wire less than 1 millimeter thick is always wrapped with silk.
|Title||:||PHYSICAL TECHNICS; OR PRACTICAL INSTRUCTIONS FOR MAKING EXPERIMENTS IN PHYSICS AND THE CONSTRUCTION OF PHYSICAL APPARATUS WITH THE MOST LIMITED MEANS|
|Author||:||DR. J. FRICK|