No. 61 279. 



Tangent Galvanometers. 



873 



61 274 B. 

 1 : 5. 



61 274 C. 



1 : 5. 



61 274 D. 



1 : 5. 



61 277. 1 : 4. 



61 278. 1 : 5. 



61.274. Sine and Tangent Galvanometer, Siemens type, Figs. A D (M. P., Ill, 9 th edn., 

 Fig. 488), with 2 windings, with shunt (Fig. B) of three sections ( 1 / 9 , J / 4 and Vi for the 

 thinner winding, needles set up in elegant case (Figs. C and D), diameter of galvano- 

 meter 120 mm 



The needles with sapphires rest on pivots; the winding ring together with the compass can be 

 rotated in the graduated circle. The winding ring has two different windings of 0.1 and 150 ohms 

 resistance. All parts are most carefully constructed. 



61.275. - - idem, smaller, diameter of compass 100 mm, with shunt 



61.276. Shunt, separately, Figure 61,274 B 



61.277. Sine and Tangent Galvanometer, Pouillet's Model, Figure (M. P., 9 lh edn., Ill, 

 Fig. 487; Gan.-Eein., Fig. 827), with two different windings and two needles, movable 

 on horizontal graduated circle; with mircometer and vernier; box 200 mm 



61.278. Tangent Galvanometer (Trowbridge's), Figure, with movable wire spiral, needle 

 on raw silk fibre suspension 



61.279. Sine Galvanometer; also at same time a Differential Galvanometer, Figure . . 



Cl. 2318/19/20, 

 2321,2322 



S. d. 



12.10.0 



11. 0.0 

 1.15.0 



14. 0.0 



11. 0.0 



6. 10. 



2323, 



