CENTEAL SCIENTIFIC CO., CHICAGO. U. 8. A. 



No. 494. 



No. 496. 



494. BALANCE, Assay, Ainsworth Type EA, a moderate priced, short arm Balance of quick action 

 with a sensibility of 1/100 milligram. 

 Specifications : 



Beam of heavy alloy, 12.7 cm in length, grad- 

 uated in 50 divisions each side of center. 

 Sensibility, 1/100 milligram. 

 Period of vibration, 5 seconds. 

 Pan and beam arrest of fallaway type. 

 Skeleton hangers of nickel silver. 



Price 



Metal parts lacquered. 



Bearings of agate. 



Plate glass sub-base. 



Case 20x 17 x 10 inches, of polished mahogany, dust 



proof, with counterpoised door and drawers. 

 Reading glass for index. 

 $160.00 



496. BALANCE, Assay, Voland, as used for carbon weighing in steel analysis. 

 Specifications: 



Beam of aluminum alloy, 6 inches long, subdi- 

 vided in 50 divisions on right side of center. 

 Capacity, 25 grams. 

 Sensibility, 1/100 milligram. 

 Skeleton hangers of German silver. 

 Period of vibration, 10 seconds. 



Price 



Metal parts lacquered. 



Knife edges of accurately ground knife steel and bear- 

 ings of agate. 



Case 15x13x8 inches of seasoned mahogany, with 

 counterpoised door and drawer. 



75.00 



No. 498. 



No. 500. 



498. BALANCE, Assay, Troemner's Portable No. 132, with carrying case of walnut, provided with 

 lock and key, trunk strap and handle. Size of carrying case, 8y 2 x 9^ x 5 inches. Total weight 

 of outfit 6% pounds. 

 Specifications : 



Beam of aluminum alloy, 10 cm in length, grad- 

 uated in 50 divisions each side of center, 

 fitted with locking device to hold beam rigid 

 when carrying. 

 Sensibility 1/100 milligram. 

 Pan and beam arrest of fallaway type. 

 Complete with set of accurately adjusted platinum weights from 1 gram to 1/10 milligram, and 

 riders 91.00 



500. BALANCE, Assay, Pocket, for use in traveling. 



Improved form with eccentric lift for beam. When closed measures 6x2% x H4 inches. Capacity, 10 



grams; sensibility. Vt milligram. 

 Complete in case with set of weights from 10 grams to 1 milligram 18.00 



Skeleton hangers of nickel silver with aluminum pans 

 Metal parts lacquered. 

 Bearings of agate. 



Case 7}& x 8^4x2% inches, of polished mahogany, 

 with counterpoised door and drawer. 



