54 L. CASELLA'S CATALOGUE 



252. Vailing or Gyle Tun Thermometers, 10-inch., with bold figures and divisions, 



double flanges, the tube bent back, and protected, for inserting the bulb into 

 the sides of vats or mash tuns and projecting into the fluid, the temperature 

 of the fluid being thus always visible outside. Eange 30 to 120 or 40 to 212 

 (fig. 252), p. 52 . . . .150 



253. VATTING OB GYLE TUN THEBMOMETEB, of larger size, bolder, and to any re- 



quired temperature . . . . . . 1 15 



254. 0?en Thermometer on cast iron base, to equalize the temperature (fig. 254), range 



60 to 450 with baking heats marked on the scale . . 12 6 



255. Oven Thermometer, the same as No. 254, to register extreme heat, on Professor 



Phillip's principle . . . . . 17 6 



256. Pyrometer (Daniell's), for measuring the expansion of metals, being the best means 



we have for ascertaining high temperatures . . .440 



257. PYEOMETEB (GAUNTLETT'S), as much used in the metal foundries of the north 



4 10 



258. PYEOMETEE, improved for general chemical manufacturing purposes, graduated to 



1200 Fah., and warranted very efficient, and true up to 900 to 1000 



440 



BREWING THERMOMETERS (Pig. 252), p. 53, 



With plain and enamel tubes on metal or porcelain scales. In these instruments 

 the utmost care has been taken to prevent error, so that all enumerated below may be 

 used with perfect confidence either for baths or brewing purposes. 



259. Brewing Thermometers, plain tubes and metal scales, in japanned cases, range 



20 to 212 ; 8 inch.,' 3s. 6d. ; 10 inch., 4s. 6d. ; 14 inch., 5s. 



260. Brewing Thermometers, enamel tubes, metal scales and japanned cases, 8 inch., 



4s. 6d. ; 10 inch., 5s. 6d. ; 14 inch., 7s. 6d. 



262. BBEWING THEEMOMETEES, enamel tubes, metal scales and copper cases, 8 inch., 



5s. 6d. ; 10 inch., 6s. 6d. ; 14 inch., 11s. 6d. 



*** Any of the above may be had with porcelain instead of metal scales, at an average of 

 8d. to Is. 6d. extra. 



263. BEEWING THEEMOMETEBS, of extra strength, with best enamelled tube, showing 



30 to 212, in strong rivetted copper case, as used in large brewing establish- 

 ments, 10 inch., 11s. 6d. ; 14 inch. vf , . . ... ; 016 



264. Blind Scale Thermometer, with ivory pocket scale for reading off, and sliding 



index to fix at any required temperature, enamelled tube in stout rivetted 

 copper case as above, 10 inch., 16s. ; 14 inch. (Jig. 264) p. 52 18 6 



265. BEEWING THEEMOMETEE, open range, /*. e., 40 to 110 in copper case in single 



degrees, 8 inch., 6s. 6d. ; 10 inch., 7s. 6d. ; 14 inch. . . 12 6 



