922 



Voltaic Electricity. Section 4: Ohm's, KirchhoH's and Joule's Laws. 



X<>. l 933 



61 948. 1 = 8. 



Gl 951. 1 : 8. 



61,934. 



61,935. 



61,936. - 



61,937. 



61,938. 



61,939. 



61,940. 



61,941. 



61,942. 



61,943. 



61,944. 



61,945. 



61,946. 



61,947. 



61,948. 



61,949. 

 61,950. 



- 6 



6 



6 



6 



6 



8 



8 



8 



8 



8 



12 



12 



14 



14 



18 



18 

 22 



Precision Series Rheostats, Figure (cf. Gan.-Man. Fig. 769; Gan.-Eein. Fig. 844). 

 61,933. - - With 6 Plugs: 0.1; 0.1; 0.2; 0.3; 0.4; 1 Ohm 



, 1; 1; 2; 3; 4; 10 Ohms 



, 10; 10; 20; 30; 40; 100 Ohms 



, 100; 100; 200; 300; 400; 1000 Ohms 



, 1000; 1000; 2000; 3000; 4000; 10000 Ohms 



, 10,000; 10,000; 20,000; 30,000; 40,000; 100,000 Ohms .... 



, 1; 1; 2; 3; 4; 10; 20; 30 Ohms 



, 1; 2; 3; 4; 10; 20; 30; 40 Ohms 



, 10; 10; 20; 30; 40; 100; 200; 300 Ohms . 



, 10; 20; 30; 40; 100; 200; 300; 400 Ohms 



, 100; 200; 300; 400; 1000; 2000; 3000; 4000 Ohms 



, 1; 1; 2; 3; 4; 10; 20; 30; 40; 100; 200; 300 Ohms 



, 0.1; 0,1; 0.2; 0.3; 0.4; 1; 1; 2; 3; 4; 10; 20 Ohms 



, 1; 1; 2; 3; 4; 10; 20; 30; 40; 100; 200; 300; 400; 1000 Ohms 



, 0.1; 0.1; 0.2; 0.3; 0.4; 1; 1; 2; 3; 4; 10; 20; 30; 40 Ohms . 



0.1; 1; 1; 2; 3; 4; 10; 20; 30; 40; 100; 200; 300; 400; 1000; 

 2000; 3000; 4000 Ohms 



0.01; 0.1; 0.2; 0.3; 0.4; 1; 1; 2; 3; 4; 10; 20; 30; 40; 100; 

 200; 300; 400 Ohms ' 



0.1; 0.2; 0.3; 0.4; 1; 1; 2; 3; 4; 10; 20; 30; 40; 100; 200; 300; 

 400; 1000; 2000; 3000; 4000; 10,000 Ohms 



61,951. Extra Price for constructing the Rheostats with two glass side walls, Figure, for 

 demonstrating the internal arrangement 



Precision Decade Resistances of manganin, comprising 10 similar resistances totalled by 



a plug. 



List No. 61,952 

 Resistance 10 x 0.1 

 7.0.0 



The decimal resistances possess the advantage in accurate working that one plug only is always 

 inserted so that the contact resistance is always the same. A second plug is supplied in order thai the 

 circuit may remain uninterrupted. 



Precision Decade Resistances of manganin, grouped up to a contact handle, Figs. A and B, 

 with covered contacts; the resistance indicated by projecting figures. Fig. B shows 

 the contacts (covers removed). 



One Decade: 



List No. 

 Resistance 







Two Decades: 



List No. I 

 RcsistancelO 

 1 



Three Decades: 



List N<>. 61,971 



HcsistancelOxO.l, 1 & 10 

 15. 10. 



s. d. 



5. o. (> 

 4. 4. 

 4. 8.0 



4. 14.0 

 8. 0.0 



11. 0.0 



5. 10. 

 5. 10.0 

 5. 10. 

 5. 10. 

 (i. 10. 

 7. o.it 



7. o. o 

 S. (I. 



8. (I. (I 



11. o.o 



10. 10.0 



13.li>. < 



0. ('. 



61,953 



10x1 



6. 10. 



61,954 



10 x 10 



6. 10. 



61,955 61,956 



10x100 10x1000 



6.10.0 7.10.0 



61,957 



10x10,000 



9.0.0 



61,958 



10x100,000 ohms 

 25.00 



61,962 

 10x10 

 6.0.0 



61,968 



61,963 



10x100 



6.0.0 



61,964 



10 X 1000 



7.0.0 



61,969 



61,965 



10x10,000 ohms 

 9.0.0 



61,970 



10 XlO & 100 10 x 100 & JOOO 10 X 1000 .V 10,000 ohms 

 10. 10. 10. 10. 10. 15. 



61,972 



10x1, 10 &100 

 15. 10. 



61,973 



10x10, 100 & 1000 ohms 

 15. 10. 



Cl. 5S93, 



