524 



CENTEAL SCIENTIFIC CO., CHICAGO, U. S. A. 



RAW MATERIAL 



The following material has been selected with special reference to the laboratory shop. The prices 

 are based on ordinary quantities and include cost of cutting. Special prices will be quoted on large 

 orders. All prices are subject to market fluctuations. Castings in all metals supplied at market prices. 



Tor TABLES giving Comparative Weights of Metals, see page 528. 



ALUMINUM 

 14800. ALUMINUM ROD, full lengths 8 to 10 feet. (See note below.) 



Diam., in % % 6 % %e 2 



Lbs. per ft 057 .089 .128 .174 .227 



Per ft. . $0.12 .15 .21 .30 .40 



% % % 1 



.356 .516 .697 .911 

 .60 .85 1.05 1.35 



14802. ALUMINUM SHEET, full sheets 12 inches wide, 5 to 6 feet long. (See note below.) 



Thickness, B. & S. No. 8 12 14 16 18 20 22 24 26 28 



Lbs. per sq. ft ...... 1.8 1.13 .89 .71 .56 .45 .36 .28 .23 .18 



Per sq. ft ........... 3.00 1.80 1.50 1.20 .90 .75 .60 .50 .45 .35 



14804. ALUMINUM TUBING, seamless. Prices on application. 

 ALUMINUM WIRE, see page 521. 



ASBESTOS 

 ASBESTOS MATERIAL, see Nos. 308 to 326. 



30 

 .14 

 .30 



14834. BRASS SHEET, full sheets 12 inches wide, about 6 feet long. (See note below.) 



Thickness, B.&S. No. 8 10 12 14 16 18 20 22 24 26 28 30 



Lbs. per sq. ft ..... 5.69 4.51 3.57 2.83 2.25 1.78 1.41 1.12 .89 .70 .55 .44 



Per sq. ft ......... 4.95 3.90 3.10 2.50 1.95 1.60 1.25 1.05 .75 .70 .55 .45 



14836. BRASS STRIP, full lengths 10 to 12 feet. 

 Size, inches 

 Lbs. per ft 

 Per ft. 



(See note below.) 



115 

 12 



.23 

 .21 



%x% 

 .29 

 .27 



.435 

 .40 



% 6 xl 

 .69 

 .60 



%xl 

 .92 

 .85 



14838. BRASS TUBING, brazed, full lengths 12 feet. (See note below.) 

 Diam., outside,* in ...... % % 6 ^4 % 6 % % % % 



Wall ] No. 14.. Per ft ................. 40 .45 .55 



B. &S. ^ No. 18. .Per ft. ....... 20 .20 .20 .25 .30 .35 



Gage. J No. 20. .Per ft. .15 .20 .20 .15 



% 

 .60 

 .40 



1 1*4 1V 2 1% 2 

 .75 .90 1.10 1.75 2.00 

 .50 .60 .70 .85 .95 



BRASS WIRE, YIQ inch and smaller, see page 521. 



CARBON 

 14840. CARBON, Granulated, for experimental purposes ............................... Per Ib. 



14842. CARBON RODS, plain, 12 inches long. 



Diameter, inches ......................... 



Each 



16 



% 6 

 .16 



.18 



% 

 .26 



V-i 

 .28 



14844. CARBON SHEET, 12x12 inches. 

 Thickness, inches 

 Per sheet 

 Special sizes, cut to order, quoted on application. 



CARBONS, for batteries, see general heading Batteries. 



14 

 3.50 



.25 



.30 



4.50 



NOTE: For convenience in shipping, certain items rods, tubing, etc. are cut in about 3 foot 

 lengths, unless specially ordered in longer pieces. 



