BAIRD &TXTLOCK (LONDON) LTD. 



A 1708 



Al708 u Balance, Oertling's No. 3b Chemical, with i2-in. beam, to carry 100 grammes in each 

 pan, and turn with y 1 ^ of a milligramme ; the beam support descends; the three knife 

 edges are of agate, and work on agate planes ; apparatus for moving the rider ; polished 

 mahogany glass case with counterpoise weights and adjusting screws, with pan supports, 

 Circular pans supplied if required 



11 11 



B1708 1 Balance, Oertling's No. 3b Chemical, as above, with pan supports and plate-glass 

 to bottom of case 



13 13 



CROSS STREET HATTOlSr GARDEN, E-C 



340 



