BAIRD &TATLOCK. (LONDON) LTD. 



1680 



1681 



1680" Balance, Ruprecht's, for Chemical Lecture Demonstration, specially adapted for demon- 

 strating the weight of gases and increase of weight caused by oxidation, etc. With a 

 load of 5 kilos in each pan, the balance is sensitive to .02 gramme, and the deviation 

 of the pointer can be observed at a distance of 50 metres. The balance is fitted with 

 two glass cylinders of equal weight, and each having a capacity of about 2 litres, two 

 polished glass discs for hermetically closing the cylinders, and two horse-shoe magnets 

 of equal weight 



1681 L Hydrostatic and Experimenting Balance, to carry i kilo, sensitive to 100 milligrammes. 

 Price of this balance, lacquered (inclusive of two brass weights of 200 grammes each and 

 of 100 grammes) 



This balance is provided with a hinged beam-support and with a pair of long stirrups with pans, and a pair 

 of short stirrups with pans, which are interchangeable. 



The beam has at each end two adjustable knife-edges and two suspenders between, above and below the plane 

 level ; there is only one pointer and one scale. The tripod is of iron, but the beam, supports, pans and levelling 

 screws of brass. Upon one of the three feet a spirit level is fixed to adjust level to balance. 

 The following instructive experiments may be carried out with this balance : 

 Dividing the beam. 

 Transposing the point of gravity. 

 Elongatin" the beam. 



Suspending weights above and below the plane level of beam. 

 Hydrostatic balance. 



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16 10 



6 10 



(CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



