62 



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



No. 828. 



No. 830. 



No. 838. 



NO. 836. 



No. 840. 



No. 842. 



828. BALANCE WEIGHING SCOOP, of glass, flat bottom with spout. 



No. A B 



Length, ram 67 87 



Each $1.00 1.20 



830. BALANCE WEIGHING SCOOP, of German silver, with long spout and with counterpoise.. 4.25 

 832. BALANCE WEIGHING SCOOP, same as above with short spout 4.25 



834. BALANCE WEIGHING SCOOP, of pure nickel, with spout and counterpoise, accurately adjusted. 



Diameter, 65 mm. Length over all, 95 mm 3.00 



835. BALANCE WEIGHING SCOOP, Cope, for int.'oducing a weighed sample directly into a long neck 



flask. The scoop is made of aluminum and has a cylindrical extension and lock pin by which a 

 long handle is attached. Complete with scoop and brass and wooden handle (See Technical Paper 

 160 of the United States Bureau of Mines) 2.00 



836. BALANCE WEIGHING TUBE SUPPORT, nickel-plated, for horizontal or vertical use... 2.00 



838. FORCEPS, for use with sets of weights; brass with curved points; ivory tipped, heavily lacquered 

 1.50 



840. FORCEPS, of brass with curved tips 25 



842. WEIGHT BLOCK, of polished wood, with sliding cover, empty, with separate compartments for 

 holding fractional weights No. 712 and 748. Convenient for placing in balance case 50 



