BAIRD &T&TLOCK (LONDON) LTD. 



4087 



4087 s Thermometers, Standard " B," Anschutz's pattern, of Jena normal glass, engraved scale, in set 

 of seven, covering range 10 to 360 C., subdivided in one-fifths as follows, in good leather case, length 

 about 18 centimetres. 

 No. 1234 



-10 to + 55 50 to 105 100 to 155 150 to 205 



No. 5 6 7 



200 to 255 250 to 305 300 to 360 



Price of complete set, 450; with National Physical Laboratory Certificate for each, 5 15 0. 

 Thermometers Nos. 2 to 7 are provided with graduations 15 to 20 C. below the chamber for testing purposes, 

 and Nos. 3 to 7 are filled with nitrogen to prevent distillation of mercury. 



4088 s Thermometers, Standard " C," of Jena glass, finely divided for accurate reading. High range, 



filled with nitrogen in accordance with the regulations of the N.P. Laboratory. 

 Length . . 18 in. 18 in. 18 in. 18 in. 



5 to 205 C. in 5 to 305 C. in i o to 400 F. in i o to 600 F. in i 



Range 



With N.P.L. Certi- 

 ficate every 



Price 



Length 



Range 



With N.P.L. Certi- 

 ficate every 



Price 



25 

 2 10 



30" or 40" 

 276 



50 

 2 10 



20" 



276 



18 in. 20 in. 18 in. 20 in. 



5 to 360 C. in \ 5 to 420 C. in i o to 680 F. in i o to 800 F. in 2. 



50 

 2 10 



50 

 2 10 



100 

 2 10 



100 

 2 10 



4089 s Thermometers, Standard " D," of Jena glass. Nitrogen filled under great pressure, Centigrade 

 scale. 



20 in. 

 o to 500 C. in i c 



20 in. 

 o to 550 C. in i c 



20 in. 20 in. 



100 to 550 C. in i 200 to 550 C. in i 



And o point graduation. 



Length 

 Range 



Price 



Extra for N.P.L. 

 Certificate every 

 Price 



4090 s Thermometers, Standard " D," of Jena glass. Nitrogen filled under great pressure. 



Length . . 20 in. 20 in. 20 in. 20 in. 



Range . . . . o to 900 F. in 2 o to 1000 F. in 2 200 to 1000 F. in 400 to 1000 F. in 



2, with 32 point 2, with 32 point 



graduations. graduations. 



Price .. .. 1 18 210 210 210 

 Extra for N.P.L. 



Certificate every 100 100 100 100 



Price .. .. 15/- 16/6 16/6 16/- 



Thermometers, Standard "D,'> 500 C. and 900 F., are made of Jena Borosilicate glass with 

 enamelled back, above these ranges of Jena Combustion glass with ground back. 



