BAIRD &.TATLOCK. (LONDON) LTD. 



6056 



6057 



6058 



6059 



6056 s Barometer, Bunsen's, syphon tube, graduated into millimetres, filled with mercury, and 

 mounted on mahogany stand, with mirror back to avoid parallax when reading 



6057 s Barometer, Bunsen's syphon, with plain tube and sliding millimetre scale on polished 

 mahogany board for direct reading, suitable for school use 



I 6058 s Barometer, designed by Mr. Gee, with boxwood millimetre scale and two sliding points . . 



5 6059 s Syphon Barometer, consisting of an ungraduated Bunsen syphon tube, filled with mercury 

 and mounted on a polished mahogany board fitted with a sliding millimetre scale for direct 

 reading. The necessary adjustments and readings are made on the scale by means of two 

 sliding indexes fitted with cross wires, and mirror backings at the upper and lower surfaces 

 of the mercury column. This barometer is of thoroughly reliable construction, and as 

 the height of the column can be read with fair accuracy to .1 mm., it is suitable for all 

 ordinary purposes. The tube used in the instrument is provided with an air-trap 



6060 s Barometer, with ivory scale, sliding vernier, thermometer, and adjusting screw on polished 

 oak frame 



6060 



1 5 



1 5 

 16 & 



1 12 



1 1 



ICHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



