BAIRD '&L TXTLOCK (LONDON) LTD. 



Bunge's Short Beam Chemical Balances. 



All genuine Balances have the name " PAUL BUNGE " stamped conspicuously on the beam. 

 AGENTS : BAIRD & TATLOCK (LONDON), LTD. 



All Bunge's Balances have the zero point of scale at the left-hand end of the beam, so 

 that the entire length of scale can be used uniformly throughout, and the mistakes frequently made 

 through confusing " plus " and " minus " are obviated. The Balance should be counterpoised, 

 and brought into action with the rider set at O. 



1697 



1698 



1697 Bunge's Balance, 1 E, to carry 200 grammes, sensitive to i milligramme, beam of 

 bronze, gold plated, all bearings and points of contact of the beam of agate. Case with 

 two side doors, but only one sliding front (no slide at back). Length of beam 13 centi- 

 metres, divided by notches for rider, each notch equals T 3 ff milligramme. All swinging 

 parts are of finely polished German silver. Price, mounted on black glass sole . . 



1698" Bunge's Analytical and Technical Precision Balance, 1 D, to carry up to 200 grammes, 

 sensitive to T 1 5 milligramme. Specially recommended for rapid and accurate analytical 

 work. Beam, 13 centimetres long, of gun-metal, with round pointer ; in place of a rider 

 scale the beam itself is divided and graduated in 100 divisions, so that moving a 5 

 milligramme rider the full length of the beam will cause an alteration of the equilibrium 

 of the balance by one centigramme. In this way milligramme weights are not 

 required, one notch corresponding to every 0.1 milligramme, and every ten 

 notches to one milligramme. The time of oscillation, with a medium load, is only 

 9 seconds, this being the shortest time in which the oscillations can be read off with 

 certainty. Owing to the low situation of the centre of gravity the sensitiveness is the 

 same for any load. The knife edges and planes, as well as all contacts of the beam 

 and pan suspensions, are of agate. Price, with polished mahogany case, with doors 

 opening on all sides, and mounted on black plate-glass sole with levelling screws 



900 



10 



