BAIR-D &TATLOCK (LONDON) LTD. 



PHYSICAL WEIGHTS. 



1844-1846 



1847-1852 



Weights, brass, in polished mahogany box with hinged lid, forceps, and glass plate to cover 

 small weights, each piece fitted separately, fractions .5 to .001 grammes in German silver. 

 1844 1 50 to .001 gramme 

 1845" 100 to .001 gramme 

 1846" 200 to .001 gramme 



Weights, brass, in polished box with forceps, fractions .5 to .001 grammes in German silver 



20 to .001 gramme 



50 to .001 gramme 

 100 to .001 gramme 

 200 to .001 gramme 

 500 to .001 gramme 



1847' 

 1848' 

 1849' 

 1850" 

 1851' 

 1852" 1,000 to .001 gramme 











12 





 

 

 

 15 

 19 



1856-B1857 



1853-1855 



Weights, brass, in block, with glass covering for fractions, and pair forceps 

 1853" 20 to .001 gramme 

 1854 U 50 to .001 gramme 

 1855" 100 to .001 gramme 



Weights, brass, in wooden block without cover. 

 1856" 500 to i gramme 

 1857" 1,000 to i gramme 

 A1857" 2,000 to i gramme 

 Bl857 u 5,000 to i gramme 



030 

 040 

 050 



076 

 096 

 19 6 

 1 18 



1EMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



