878 



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



No. 61 304 



61 304. 1 : 5. 



61 308. 1 : 4. 



61.304. Reflecting Galvanometer, F i g u r e, arranged as ^"o. 61,302, but with copper damper 

 and hell-shaped magnet; it is therefore less sensitive than No. 61,302. With transmission 

 chamber and one pair cylinders with two different windings 



61.305. - - i d e m, with two pairs cylinders, one with thick and one with fine winding . . 



61.306. Reflecting Galvanometer, Figure, smaller, with detachable oil damper, pointer 

 and mirror reading, transmission chamber and lens, with one coil having two different 

 windings 



61.307. Reflecting Galvanometer with two coils, one having thick and the other fine winding, 

 otherwise exactly as No. 61,306 



61.308. Model of a Reflecting Galvanometer, Figure, as suggested by Weinhold, with air 

 damping (\V. I')., Figs. 543 a c [516 a c]) 



Moving Coil Reflecting Galvanometers: see further on in List. 



Reflecting Galvanometers Nos. 61,302 61,307 can also be employed with Telescope 

 Reading. It is advisable, however, to insert a polished plane mirror so as to obtain a 

 clear image. 



61.309. Extra Price for a polished plane mirror 



Accessories for Reflecting Galvanometers. 



61.310. Paraffin Lamp with slotted chimney, for Reflecting Galvanometers, F i g u r e, on 

 stand 



til. 311. Incandescent Gas Burner for Reflecting Galvanometers, on stand and with slotted 

 chimney, Figure 



60,71H. Electric Incandescent Lamp on stand with protecting chimney, Fig. ;u.71.s, p. 842, 



for Reflecting Galvanometers 



The glow lamp is of the long filament type. Vulture to he staled ulien ordering. If this is 

 not <|iioteil ue supply 1 1<> volt lamps. 



<il. .">!.">. Spare Glow Lamp for pressures to lio volts 



61.311. -- idem, for 150 or 220 volts 



I!l.:;i5. Nernst Lamp on stand and with protecting cylinder; I'm 1 use only mi Direct Cm-rent 

 at 110 220 volts; giving a very bright image 



s. d. 



7. 10.0 

 ! 8.15.0 



4. 0.0 



5. 0. 

 1. 8.0 



0. 8.0 



0. 8.0 

 0.12.0 

 0. 18. 



o. 3.0 

 0. 4.0 



1. 4.0 



Cl. 2326, 2328. 2358 



