BAIRD &. TATLOCK: (LONDON) LTD. 



4982 r Pulfrich's Refractometer, as No. 4980 with Prisms I. and II. and necessary 



accessories for investigating glass .. " .. .... .. .. . . 31 5 



4983 

 4983 r Abbe Refractometer, by Zeiss, with heating prisms, model I., in case . . 



A. Thermometer, engraved, 0-75 C. . . 



B. Special thermometer, after Wollny, for direct reading 



C. Special thermometer, after Baier, for direct reading . . 



D. Correction thermometer . . 



E. Heating spiral, see Fig. 4972 



F. Water-pressure regulator, see Fig. 4973 



Price complete 



20 

 050 

 076 

 096 





 3 



12 

 25 2 6 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



899 



