790 



Magnetism. 



\,,. I'.ll UVIi 



60 088. 1 : 3. 



60 086. 1 : 5. 



60089. 1:3. 



60094. 1:2. 



60 091. 1 : 4. 



60092. 1:7. 



60 093. 1 : 7. 



r 



60 095. 1 : 3. 



60.086. Apparatus for Explaining the Varying Magnitude of Inclination on the Earth, Figure 

 (Fr. phys. Techn. II, 1, Fig. 567) ....... ................. 



The apparatus consists of a semi-circular magnet, which can turn about a circle in a stand, and 

 a dipping needle placed above it. According to the position of the magnet relatively to the needle 

 the latter shews none or different inclination. 



60.087. Declination Needle, swinging on a brass divided circle 12 cm in diameter .... 



60.088. -- idem, simpler, on wood, Figure ................... 



60,089. Declination Needle, on glass graduated circle, Figure, for objective demonstration 

 with the aid of the horizontal projection apparatus 



t 



1. 0. 



0.18.0 



0. 7. d 



d. 9. d 



60.090. Dipping Needle, simple, for suspending from a thread (M. P. 10 lh edn., IV, 1, Fig. 39; 



9 th edn., Ill, Fig. 34; Gan.-Man., Fig. 604), with well adjusted needle o. 10. 



60.091. Dipping Needle, simple, on stand, Figure, with well adjusted needle 0.15.0 



60.092. Inclination Apparatus with magnetizing spiral, for demonstration purposes, F i g u r e. 



for remagnetizing the needle 2. S. d 



60.093. Inclinator, with electro-magnet, Figure (Fr. phys. Techn. II, 1, Fig. 577). . . 2. o. o 



60,09-1. Indicator of Direction of Field, Figure, consisting of a magnetic needle freely 



movable in space, in solid frame, with extensible haft, in case 0.12.0 



lid. d95. Declinator and Inclinator, Figure, can be used at same time as a galvanoseope; 



pillar turning in tripod, well constructed and carefully balanced needle J. s. it 



60.096. Dipping Circle, Figure, for the projection lantern, with glass scale, with t\\<> 

 terminals; can also be used as galvanoseope 1. 1. d 



60.097. Dip Circle, Figure, with canying ring, in mahogany carrying case 1. Id. d 



5188, L'II:I:I. 

 5(191.'. 



*<:;> 



