NEGEETTI AND ZAMBEA, HOLBORN VIADUCT, E.G. 



m 



FIG. 9. 



FIG. 7. FIG. 8. 



4. Large Standard Barometers with attached Thermometer suited 

 for Observatories and Public Institutions. The tubes are T 6 oths internal 

 diameter, and the bulbs of the thermometers are of the same dimensions. 



Price, Fig. 7. 21 



5. Observatory Standard Barometers with extra large tube and 

 cistern, arranged for observations being taken by the Cathetometer for extreme 

 precision, as used at the Greenwich and Kew Observatories. 



Price, Barometer, Fig. 8, , 25 30 

 Cathetometer, Fig. 9 ... 35 



