BAIRD &TATLOCK. (LONDON) LTD. 



B1937 



B1937 8 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 5 



Charts either inches or millimetres. 







c!937 s Barograph in all metal frame, iron base, hinged copper cover. Specially suitable for use 

 in tropical climates. Size 10 x 5 X 7! in. 



Charts either inches or millimetres. 



4 17 6 



D 1937 s Charts, millimetres or T V in. 



A. Ink .. 



B. Pens . 



per box of 52 weekly charts 



per bottle 



each 





040 

 009 

 1 



CROSS STREET HATTOTsT GARDETST, E-C 



390 



