BAIR-D &. TATLOCK (LONDON) LTD. 



4848-4857 

 Simmance-Abady Patent CO 2 Recorders for Works Control. 



4858-4859 



These comprise special types of automatic recorders for use in kilns, ceramic kilns, beet sugar plants, gas 

 producers, for process gas in chemical works, and other waste gases. 



They are made with different ranges, and are built to work either with gas under piessure or to draw gas 

 against a draught as high as 30 in. water. In some cases the charts are circulars, as No. 4847, while in others 

 the record is made on continuous tape chart lasting for 60 days. 



Prices, any of Nos. 4848-4857 . . . . . . . . . . . . . 30 



4848 T Disc Chart o-io per cent. 

 4849* 0-35 



4850 T ,, 65-100 



4851 T 0-50 



4852 T 30-50 



4853 T 50-100 



4854 T 80-100 



4855 T Tape Chart 0-20 

 4856 1 0-50 



4857 T o-ioo 



Note. In sending enquiries or orders, particulars of maximum and minimum 

 readings and amount of pressure or vacuum should be stated. 



Simmance & Abady Corrosive Gas Analysers, for paper mills, pyrites burning plants, 

 and chemical works. 



These recorders work on similar lines to Nos. 4848-4857, but are specially constructed in wood cases 

 with the recording mechanism in separate compartment, while the parts of apparatus coming into contact 

 with the gas to be measured are made of such materials as to resist corrosion. 



They have been made for SO, and hydrochloric acid gas. 



Price 35 



4858 T Disc Chart 0-20 per cent. 

 4859 1 Tape Chart 0-20 



Note. In sending enquiries or orders, particulars of gas to be analysed, maximum 

 and minimum readings and details as to amount of pressure or vacuum should be stated. 



CROSS STREET HATTOTST GARDETST, E-C 



