BAIRD <ScTATLOCK (LONDON) LTD. 



6066-6067 6070 6071 6072 



6066 s Barometer Tube, Bunsen's, with air-trap, without mercury, graduated into millimetres 

 6067 s Barometer Tube, Bunsen's, filled with mercury, and graduated into millimetres 



6068 s Barometer Tube, Bunsen's, graduated into millimetres, without mercury, with milk 

 glass back . . 



6069 s Barometer Tube, Bunsen's, as above, filled with mercury 



6070 Barometer Tube, with bulb, closed at one end 



6071 Barometer Tube, straight . . . . . . . . each, 9d. ; per doz. 



6072 Barometer Tube, with syphon limb . . . . . . . . . . each 



6073 



6073 s Barograph or Self-Recording Barometer. This instrument will record the variations 

 of the atmospheric pressure for seven days without attention when it is necessary only 

 to replace the paper chart. Fitted in polished mahogany case, with plate glass front, 

 and a sufficient number of charts to last a year. Price complete 



6074 s Barograph Charts in millimetres or inches . . per box of 52 (for one year) 



060 

 16 6 



066 

 17 

 1 

 8 

 1 



5 

 4 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



109 





