PRICES OF NEGRETTI AND ZAMBRA'S 29 



STANDARD ANEROID BAROMETERS. 



Compared and Corrected Scale Aneroid, Compensated for 

 temperature, as supplied to the Royal Navy and Meteorological 

 Department . . . . .-. . . . .550 



Surveyors' or Engineers' Aneroid Barometer for Altitude 

 Measurements, Compensated for temperature, with Revolving 

 Ring, carrying Index, range of Scale, 10,000 feet, 4J inches 

 diameter ...........770 



Pull Range Engineers' Altitude and Surveying or Balloon 

 Aneroid, corrected and Compensated for temperature, with 

 20,000 feet, Altitude scale (See engraving in Surveying Instru- 

 ment Section) 880 



Mining Surveyors' Aneroid Barometer, with a Scale reading 



to 7,000 feet above the Sea Level to 2,000 feet below . 5 10 



Leather Case with Sling Strap, for any of the above . . 0126 



Pocket-Sized Aneroid, with Revolving Ring carrying Index 



(size shown in fig. 24) . . . . . . . .440 



Mountain Aneroid Barometer, Pocket-Size, for measuring 



Altitudes to 10,000 feet, Compensated for temperature 550 



Ditto ditto ditto to 20,000 feet, fig. 24 . . .060 



Watch-Sized Aneroid Barometer, of best Construction, 

 Compensated for temperature, for Meteorological 

 Observations or Altitude Measurements to 10,000 feet, 

 (size shown in fig. 26) . . . . . . . .550 



Watch-Sized Aneroid Barometer, to 20,000 feet . . .660 



Watch-Sized Aneroid Barometer, with Devolving Altitude Scale 



for 10,000 or 20,000 feet (Seepage 25) . . 5 10 6 10- 



Watch-Sized Aneroid Barometers, with Thermometer and 



Compass, in Morocco Pocket Case (fig. 27.) . 7 70 and 880 

 Watch-Sized Aneroid Barometers in Solid Gold Cases 15 15 to 21 

 Ditto ditto in Stout Silver Cases . . 6 6 and 770 



Aneroid Barometers may be had with the French Metrical Scale, or with the 

 English and corresponding French Scale engraved on the same instrument. 



In the Section of our Catalogue " Household Barometers" will be found 

 an illustrated price list of Aneroid Barometers in Ornamental Mountings, 

 suited for the Drawing Room, Library or Hall, Ships or Yachts, &c. 



