45, CORNHILL E.G., AND 122 REGENT STREET, W., LONDON. 205 



FIG. 602. 



SCHAFFER'S STEAM PRESSURE AND VACUUM GAUGES * 

 Gauges of any Pressure not exceeding 300 Ibs. per square inch, SQQfeet of water, 



and Vacuum Gauges : 



Each 



601 For Portable Engines, Brass Case. 4-inch with wire *. a. 



guard ' 1 15 



602 No. 1. In Metal Case, with Brass Rim 6-inch dial 226 

 No. 2. In Brass Case . . . (fig. 602) 2 10 



603 No. 3. In Metal Case, with Brass Rim 7 276 

 No. 4. In Brass Case .... 2 10 



604 No. 1. Patent Steel Tube Metal Case, with Brass Rim, 



above 300 Ibs. up to 1,000 Ibs. . . 6-inch dial 2 15 



605 No. 2. Ditto Brass Case, above 300 Ibs. up 



to 1,000 Ibs 6 330 



606 12-Inch with Transparent Dial for Dark Engine Rooms, 



Metal Case, with Brass Rim 330 



507 Combined Pressure and Vacuum Gauges, at a slight increase of these prices. 



608 Hydraulic Gauge, above 1,000 Ibs. up to 10 tons, with 



Maximum Pointer and loose nuts for connecting 



10-inch Dial 550 



Ditto ditto .... 6-inch Dial 4 10 



Ditto ditto to 4 Tons . ... 400 



For each additional ton, 5s. extra. Maximum Finger applied to any gauge, 10s. extra. 



609 Dynamometer, Schaffer's. The dial showing the weight is accurately divided, 

 by applying dead weight. Two solid curved steel bars act as springs. Weight or 

 strain applied has the tendency to straighten these springs, and the slightest motion 

 of the same is multiplied and transferred by a suitable arrangement to a pointer 

 which indicates the correct weight on the dial. Two strong rods outside the 

 springs, moving loosely in their joints, act as safeguards in case the springs break. 



Price, up to 20 tons . . 25 



* Schaffer't Gauges, Sfc., not kept in stock, but are supplied to order. 



