BAIRD & TATLOCK (LONDON) LTD. 



Then - pis the loss ol weight in water, and n _ . is the specific weight of the body. 



For instance : First reading (m) =150 millimetres, 



second reading (n) =600 ,, 

 absolute weight (n - m) =600- 150=450, 

 third reading (p) =510 millimetres, 

 loss of weight in water ( - p) =600 510=90, 



n m 450 

 specific weight = = 5. 



-p 90 



(c) Determination of Specific Weight of Fluids. 

 Remove both pans and fix the solid glass body to the spring. Determine for the body after the above- 



flescribeil method 



the loss of weight in water, which may be = 90, 



,, ,, the fluid to be examined, which may be = 108. 



1 08 

 Then - = 1.2 is the specific weight of the fluid. 



1774 



1775 



1774 L Balances, Hand Scales, brass beam and horn pans, suspended by silk cord 



Length of beam . . . . 10 13 17 19 25 30 centimetres. 



Diameter of pans . . - 3i 5 7 8 io 13^ 



Price each .. ..2/6 3/- 3/6 4/- 6/- 8/- 



1775 U Dispensing Scales, in oak boxes (with weights, 2 drachms to i grain) 



Length of beam . . . . . . 5 6 8 in. 



A. With brass pans . . . . . . 4/6 4/9 5/6 



B. With glass pans . . . . . . 5/6 5/9 7/- 



1776 



1776" Balances, Beranger's principle, 

 round brass movable pans. 

 Diameter of pans 

 To weigh 

 Price 



On stained walnut box, with marble top, and two 



i 

 211- 



7 



2 



24/- 



8 in. 

 5 kilos. 



28/- 



(CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



367 



