45, COENHILL, E.G., AND 122, REGENT STREET, W., LONDON. 



469 



FIG. 2857. 



FIG. 2835. 



Pump with 



2834 Large Size Double-Barrel Table [Air 



11-inch plate, either of accurately-turned Gun Metal, 

 or Ground Plate Glass, mounted on a stout 

 Mahogany Stool Stand, with barometer gauge and 

 graduated scale divided to inches and tenths 



2835 Ditto ditto (fig. 2835), (Davenport's arrangement) 



with mercurial gauge, raised receiver plate, 8 inches 

 diameter, Mahogany Mounting, brass clamp for 

 fastening the pump to the table, and brass spanner . 



s. d. 



25 



12 12 



FIG. 2843. 



FIG. 2838. 



FIG. 2844. 



2836 Double-Barrel Table Air Pump, second size ditto 



2837 Ditto, third size, with receiver plate, on stand, with 



gauge 



2838 Ditto ditto, without gauge (fig. 2838) 



2839 Ditto, fourth size 



2840 Ditto, small size 



11 10 



8 10 

 7 10 

 5 

 4 



