166 



NEGEETTE AND ZAMBEA, HOLBOEN YJADUCT, E.G., 



333 



334 



335 



336 



Each. 

 & s. d. 



Each. 

 s. d. 



340 



341 



Six's Registering Thermometers, with Opal Glass Scale, 



and the divisions and figures enamelled and burnt in, 



mounted on Oak and other woods, suited for Halls, 



Libraries, Dining rooms, &c. (fig. 333) 15s., 21s. 1 10 220 



Six's Thermometers, with NEGRETTI AND ZAMBIA'S 



Patent Bulbs 25s. 



Six's Registering Thermometers, Opal Glass scales, 



fitted on Bronzed Metal brackets and Oak or 

 Mahogany board for suspending outside a window, 



(fig. 335) 25s. 



Six's Thermometers with extra large size Patent 



Porcelain or Opal Glass Scale, and very legible figures 



and divisions (fig. 336) and Various Mountings . 



1 10 250 



330 



330 3 10 



FIG. 337. 



337 Negretti and Zambra's small size Patent Maximum and Minimum 



Thermometer. The Tubes divided on the Stem, arranged in a mahogany 

 case, suited for travellers to whom bulk and weight is an object (fig. 337) 

 Pocket-size ...220 



338 Ditto ditto, larger Standard size, see also page 51 . . . 2 10 



FIG. 339. 



339 Day and Night Registering Thermometer, Rutherford's,* 

 on a Boxwood scale, with a Magnet (fig. 339) 



15 1 10 



too no m wo sn sc 70 to so 40 



FIG. 340. 



Day and Night Registering Thermometer, with Cylinder Bulbs and enamel 

 tubes of large internal diameter. The Maximum Thermometer, Negretti 

 and Zambra's Patent arrangement, and each tube mounted on a separate 

 scale, but joined together with a screw in order that the Thermometers 

 can be used either combined or alone (fig. 340) . . . .220 



Negretti and Zambra's large sized Maximum and Minimum Sea Coast 

 Registering Thermometers, with Porcelain Scales, as constructed for 

 Admiral Fitz-Boy ......... each 220 



FOR STANDARD SELF-REGISTERING THERMOMETERS, seepages 31 to 51. 



* This Thermometer is very liable to get out of order, hence it is now but seldom used. 



