OP STEAM GAUGES, ETC. 



197 



FULL SIZE. 



FIG. 2305. FIG. 2308. 



2301. METALLIC PBESSUBE GAUGE, as No. 2300, 5 inch. . . 130 



2302. 6 . 160 



2303. 7 . . . ' . 1 10 

 If with stop-cocks (of best gun metal), 3s. 6d. ; with iron syphon, extra 016 



VACUUM GAUGES, same sizes and prices, as above. 



2304. Iron Gauges, as above, and at same prices, especially adapted for soap and candle 



manufacturers and chemical works, where caustic potash and its influences 

 are destructive to every other arrangement. 



2305. POCKET WATER PEESSUEE INDICATOR, for showing any pressure up to a column 



of 600 feet, much used for testing the strength of mains, and showing the 

 constant actual height or pressure of water (fig. 2305) . 150 



2306. FIVE-INCH, ditto . . . . . . 100 



2307. SMALL MODEL POCKET PEESSUEE GAUGE, size of fig. 2305, for testing model 



machinery at any pressure up to 3001bs. on the inch. . 150 



2307*. INSPECTORS' PEESSURE GAUGE for the pocket, showing up to 3001bs. or 



upwards, thickly silvered, with the three different sized connections, in 



morocco case . . . . . . . 200 



2308. BOTTLE TESTING PRESSURE GAUGE, thickly silvered and highly finished, size of 



No. 2305, with tap and screw complete (fig- 2308), in morocco case, for 

 testing the amount of air in soda water and other aerated beverages. To the 

 maker, as well as the purchaser, the value of this test can hardly be over 

 estimated. The tap may also be used separately where a portion only of the 

 beverage is required to be used at the time . . . 2 15 



Bourdon's Pressure and Vacuum Gauges of usual sizes and best make : 



2309. PRESSURE GAUGE, 7 inch, diameter, with central or eccentric hand (fig. 2309 



or 2309*), p. 198, to indicate any pressure up to 2001bs. on the square inch, and 

 fitted with gun metal cock . . . . . 1 14 



