BAIRD &TATLOCK (LONDON) LTD. 



SECTION No. 16. 



Apparatus for Physico-Chemical Experiments. 



5248 



5249 



5248 r 



5250 



Model I. Price of the instrument 



Capillary Electrometer, after Ostwald Luther. 



complete, with capillary tube as figured 

 Consists of large pattern microscope, easily adjustable and mounted on tripod stand. The microscope is 

 fitted with a micrometer eyepiece reading to o.i millimetre. The capillary tube is held in a clamp and easily 

 adjusted to the correct height The stand is also fitted with well insulated terminals for connecting current 

 to the capillary tube. 



5249 1 Light Arrangement for use with Model I. Price for use with 2-volt accumulator 



Consisting of heavy base with adjustable pillar, terminals and switch. The lamp is mounted in a metal 

 frame and protected by a milk glass plate, adapted for use on a 2-volt circuit. 



5250 T Capillary Electrometer, after Ostwald Luther. Model No. II. Price complete, with 

 lamp and switch as figured, and one exhausted capillary tube 



This instrument is very similar to Model I., except that the whole apparatus can be easily inclined to an 

 angle of 45. The capillary is held quite free from the rest of the apparatus, and is easily adjusted to the required 

 height. An Osram lamp is fixed on an adjustable arm. 



525 1 T Capillary Electrometer, after Ostwald Luther. Model No. III. The complete apparatus, 

 as figured, with one capillary tube 



This instrument is very similar to Model II., but is so arranged that by means of a fine adjustment the capillary 

 can always be brought in a vertical position in front of the microscope so that the microscope can be turned in 

 its vertical axis into the middle of the observation field. 



12 



550 



6 10 



CROSS STREET HATTOW GARDETST, E-C 



952 



