45, COBNHILL, E.G., AND 122, REGENT STEMET, W., LONDON. 



197 



GUN" METAL WATER GAUGES. 



565 On an improved principle, with Ebony handle spanners, complete mth glass 



tube and vulcanised rubber rings : fig. 565. 



f -in. 30s, -in. 35s. |-in. 40s. f-in. 42s. 



GAUGE TUBES. 



566 Gauge Tube, for Steam Boilers, &c., of stout annealed glass, manufactured 



expressly for this purpose. Various lengths and diameters cut to order, 

 average Id. per inch 



GAUGE TUBES of the best quality : 



SIZES. 



12 

 10 

 12 

 H 



10 

 12 



14 



PER DOZ. 

 8. d. 



. 11 

 . 12 

 . 12 

 . 16 

 . 17 

 . 20 

 . 22 



Estimates given for large quantities 

 India Rubber Washers for Packing Water Gauges supplied to order. 



GAS PRESSURE GAUGES. 



FIG. 572. 



FIG. 568. 



FIG. 570. 



567 



568 

 569 

 570 

 571 



572 



Each. 

 B. d. 



Gas Pressure Gauge, with 6 -inch glass syphon, Wood Scale divided to 

 inches and tenths, and brass mountings 



Ditto ditto, with Stopcock 10 



Ditto, with Ivory Scale and Stopcock (fig. 568), best finish . 14 



Gas Pressure Gauge, large size (fig. 570), with Stopcock and Union 1 5 

 Ditto, of superior finish, as supplied to the Metropolitan 



Board of Works, in Brass Mountings, with stopcock , . . 1 10 

 Gas Inspector's Gauge, with fittings complete, in leather pocket 



case (fig. 572) , , . . -220 



