70 



CENTRAL SCIENTIFIC CO., CHICAGO. IT. S. A. 



No. 1032. 



No. 1036A-D. 



No. 1036E. 



1026. BATTERY, Standard Cell, glass part only, with platinum wires, for those desiring to make their 



own standard cells. This is the regular H form and may be used to make any of the ordinary 

 forms of standards -. $1.30 



1027. BATTERY, Standard Cell, glass part only, without platinum wires 80 



1028. BATTERY, Standard Cell, same as No. 1026, on stand as illustrated 3.00 



1030. BATTERY OF FIVE STANDARD CELLS, consisting of five No. 1026 mounted on supports and 



base provided with bars, traveling plugs and binding posts for convenient combination in 

 series and parallel 12.50 



1032. BATTERY, Standard Cell, Weston, unsaturated type, Model 4. Consists of an H-shaped recep- 



tacle with platinum leads which pass through the bottom. One limb of the cell contains cad- 

 mium amalgam; the other mercury and a paste of mercurous sulphate. The cell is filled to 

 slightly above its cross arm with an unsaturated solution of cadmium sulphate and sealed to 

 prevent evaporation. Porcelain separators prevent the ingredients from becoming mixed. E. 

 M. F. between 1.0184 and 1.0189 volts. With manufacturers' certificate of voltage 19.00 



1033. BATTERY, Standard Cell, Weston. Same as No. 1032, but with Bureau of Standards certificate. 



23.50 



BATTERIES, STORAGE 



BATTERIES, Cenco Storage. These batteries, which are made for us by one of the most reliable 

 manufacturers, have been used extensively for years with increasing satisfaction in all classes of service. 

 The different sizes in each class have the same plate construction, the only difference being in the size 

 and capacity of the plates or elements. The voltage is approximately two volts at the beginning of 

 discharge. Each battery is guaranteed against electrical or mechanical defects, and within the dis- 

 charge rates specified they will give their full rated capacities. When charged at the normal rate given 

 for 8-hour discharge rate the cells will be charged in 9 hours, 

 battery for its charging and proper care. 



D E 



2 5 



8%x5 5%x6 



Full directions will be sent with each 



No A 



No. of plates 2 



Size of plates 3x4 



Output at normal discharge 



rate, ampere hours 8 



Charging rate, amperes... 1 

 Discharge rate for 8 hours, 



amperes 1 



Discharge rate for 5 hours, 



amperes iy 2 



Length of jar, inches 1% 



Width of jar, inches 3% 



Height of jar, inches 7 



Weight of cell, complete 



with electrolyte, Ibs 4 



1036. COMPLETE CELL, 



without electrolyte 1.50 



1037. GLASS JAR only 



Each .70 



B 



5x5 



16 



2 



3 



21/4 



C 



2 



7x5 



F 

 7 



G H J K 



9 7 9 11 



5%x6 7%x7% 7%x7% 7%x7% 



L 

 13 



24 

 3 



21/4 



6% 

 10 



32 

 4 



6 



2% 

 6y 4 



12 



64 



10 

 4% 

 7% 



96 

 12 



128 

 16 



180 

 22i/ 2 



12 16 22% 



15 

 6% 

 7% 

 9% 



71/3 11 13 1/, 30 



20 



7% 



49 



30 



61/2 



51 



240 

 30 



30 



40 

 7% 

 9Vs 

 Hi/2 



63 



300 

 371/2 



37% 



50 



360 

 45 



45 



60 

 11 



9% 



79 



96 



2.50 3.45 4.35 10.00 11.10 16.40 18.40 23.30 27.60 33.70 



.80 1.00 1.25 1.50 1.50 1.75 2.25 



2.75 



3.50 



9.00 



