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



51 



No. 604. 



No. 606. 



No. 608. 



No. 610. 



604. BALANCE, Prescription (Army), nickel plated, mounted on a box with drawer with 6 inch beam 

 lifted by a lever. Capacity, 50 grams $4.00 



606. BALANCE, Solution, provided with two weighing beams and sliding poises. One beam is divided 

 into one hundred parts, each part representing one gram; the other beam is divided into ten 

 parts, each part representing one hundred grams. A bar with sliding poise is placed under the 

 weighing beams for the purpose of balancing the empty bottle or container, which is quickly 

 done by sliding the poise along the bar until a correct balance is secured. This balance will 

 be found indispensable in soil study where quantities up to 20 kilos need to be weighed with 

 accuracy. Sensibility, 1 gram 32.50 



608. BALANCE, Specific Gravity, Hydrostatic. Excellent for work in specific gravity experiments. 

 Prismatic steel knife edges, adjustable rod supporting beam, and beam arrest. Beam can be so 

 elevated that hook under short pan is 30 centimeters from the table. Mounted on neatly 

 japanned iron base. Length of beam, 25 centimeters; diameter of pans, 10 centimeters; ca- 

 pacity, 200 grams; sensibility, 1 centigram 6.00 



610. BALANCE, Specific Gravity, Westphal Type. This is a handy and improved form for exact and 



quick determination of the density of liquids. In polished hardwood box, with Eeimann's ther- 

 mometer sinker having displacement of 5 cc. This balance overcomes all trouble with incorrect 

 hydrometers and forms an easy means for standardizing hydrometers. Complete with 5, 50, 500 

 milligram, and 5 gram riders, and 15 gram counterpoise 25.00" 



611. THERMOMETER, Extra, reading from 10 to 30C., with displacement of 5 cc 6.00 



612. WEIGHTS, Extra, for Xo. 610 Balance, per set, without counterpoise 3.00 



