BAIRD &TATLOCK. (LONDON) LTD. 



4106 



4106 s Thermometers, high temperature, for use in works, etc., graduated to 550 C. or 

 1,000 F. The tubes are made of Jena glass, nitrogen filled, and are fitted in steel 

 sheaths, drilled at bottom to allow free access of liquid to the thermometer bulb. The 

 scales are of opal glass, protected by brass half-tube, and on top of this a ring is fixed 

 for suspension, scale 10 inches long. 



Length over all . . . . 3 4 5 ft. 



Price . . . . ..220 280 2150 each. 



4107= Thermometers, high temperature, as above, but scale protected by revolving brass cover 

 10 in. long. 

 Length over all . . . . 3 4 5 ft. 



Price .. .. .. ..270 2 13 300 



Thermometers Nos. 4106 and 4107 are graduated for stem immersion to 2 ft., 3 ft., 

 and 4 ft. respectively. 



g'l'g'S'8 i'S'j 



4108 



4108 s Standard Thermometers, 30 to 220 F., engine divided on stout silvered brass scale, 

 with figures on raised piece at side, in morocco case, with National Physical Laboratory 

 certificate . . . . . . . . . . . . . . . . 2 5 t 



4109 s High Temperature Thermometers, mercurial, Jena glass, filled with nitrogen under 

 pressure. 



Length .... 15 15 16 18 18 in. 



Range . . . . 360 C. 400 C. 450 C. 500 C. 550 C. 



Price .. .. 4/- 5/6 10/6 * 15/- 18/- each. 



Any special range or length made to order. 



4110" Engraved English Chemical Thermometers, accurately made, engraved scale, but 

 without certificate, length about 12 in. 



. . . . 30 to 220 F. 



. . . . single 



Range 

 Divided into 

 Price 



Range 

 Divided into 

 Price 



o to 110 C. 

 single 



30 to 400 F. 

 every two 

 6/- 



o to 200 C. 

 single 



6/- 



30 to 600 F. 

 every two degrees. 

 7/- each. 



o to 300 C. 

 every two degrees. 

 7/- each. 



4111 s Thermometers, Jena glass, for cold mixtures and liquid air, etc., milk glass scale, + 30 C. 



to 120 C. in single degrees, toluol filled. . .. .. .. .. each 18 C 



4112 s Ditto, +30 C. to -200 C., pentane filled . . . . 1 13 f 



4113 s Thermometers, Jena glass, for cold mixtures and liquid air. Set of 10 range o to minus 



200 C. divided in T V 



27 10 (. 



CROSS STREET HATTCTST GARDETST, E-C 



774 



