872 



Voltaic Electricity. Section 3: Electro-Magnetic Current Measurements. 



\n. ill 271- 



61 271. 1 : 6. 



61 272. 1 : 5. 



61 273. 1 : 6. 



61274A. 1:3. 



61.271. Detachable Tangent Galvanometer (Grimsehl's), Figure (Kolbe-Skellon, Introduction 

 to Electricity, Part II, Fig. 159), specially adapted for practical use by students (Unter- 

 richtsblatter f. Math. u. Naturw. 8, 1902, p. 104; Physikal. Ztschr. 3, 1902, p. 462; Ztschr. 

 f. d. phys. u. chem. U. 15, 1902, p. 292) . . . '. ................ 



61.272. Tangent Galvanometer (Kolbe's), student's pattern, can also be used as a Sine-Tangent 

 Galvanometer, Figure (Kolbe-Skellon, Introduction to Electricity, Part II, Fig. 112; 

 Ztschr. f. d. phys. u. cheni. V. 4, p. 31), with Obacli movable copper ring and vertical 

 scale and sight -vane .............................. 



T ie (inlvanometer has a degree and tangent scale, the diameter of scale ring being 160 mm. 

 Tne ni'cdlr is provided with mica vane for air damping. 



* d. 



3. 0. (I 



7. 0.0 



Luminous Index as suggested by Friedr. C. G. Miiller: see No. 60,132, p. 

 Tangent Galvanometer Ring for School Galvanometer: see p. 877, No. 61,300. 



61.273. Tangent Galvanometer (Gauguin's), Figure (M. P., 9 th edn., in, Fig. 486). with 

 4 laterally arranged windings for putting in parallel or series ........... 



Cl. .1070, fiS41. 

 2314, 2317. 



7.10.0 



