41.-2 



CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



No. 11154. 



Nos. 11162-5. 



11142. PYROMETER, Scimatco Optical, same as No. 11140, but with scale graduated from 1400 to 

 3000F $175.00 



ITote: Higher ranges can be supplied if desired. 



11154. PYROMETERS, Shore's Pyroscope, for measurement of temperatures by comparison of the 

 color of the heated object with that of a kerosene flame. This instrument was designed 

 especially for the heat treatment of steel and for brass foundry work, but can be used for 

 any measurements within the ranges given. The instrument is self contained and easily por- 

 table, requiring no batteries or electrical connections of any kind. The entire operation con- 

 sists in focusing the telescope upon the object whose temperature is to be measured, turning 

 the knob which operates the diaphragm until the difference in color disappears and then 

 reading the temperature from the graduated drum. Complete with instrument as described, 

 and with small and large tripods for mounting at convenient height. 



No A B 



Range, degrees F 1200-2100 2000-3000 



Each 65.00 65.00 



11162. PYROMETERS, Thwing Radiation, Portable Type, for measurements of temperatures of objects 



in furnaces, of objects in motion, or in inaccessible places, by means of the heat radiated 

 from the object. The instrument consists of a Receiving Tube for collecting the radiation 

 and concentrating it upon a sensitive thermo-couple, and a Galvanometer to measure the cur- 

 rent thus generated. The design of the tube makes it independent of the distance from the 

 hot body, provided the surface is of sufficient area to fill the angle formed by the opening 

 in the tube. The instrument is very rapid, requiring an interval of only 5 seconds before 

 a reading may be made after the tube is pointed at the object. Convenient for use in cement 

 kilns, open hearth furnaces, carborundum furnaces, electric furnaces, brick kilns, lime kilns, 

 smelting furnaces, coke ovens, boiler fire pits, hardening furnaces, etc. It should not be used 

 for gases, flames or transparent bodies, nor where there is much smoke or flame. Complete 

 with tube 30 inches long divided in two sections, portable indicator in aluminum case with 

 4-inch scale with zero adjustment, and with connecting cord. 



No A B C D E F G 



Range, degrees F... 500-1400 800-1800 1000-2500 1400-2500 1200-2800 1000-3000 1400-3500 

 Each 135.00 135.00 135.00 135.00 135.00 135.00 135.00 



11163. PYROMETERS, Thwing Radiation, Portable Type, same as No. 11162, but with double scale; 



graduated in Fahrenheit degrees. 



No , A B 



Range, degrees F 1000-2500 600-1650 



500-1500 



D 



400-1200 



E 



600-1800 



Each 

 No. 



1800-3600 1000-3000 1000-2500 800-2800 1200-3600 

 145.00 145.00 145.00 145.00 145.00 

 F G 



H 



Range, degrees F 1000-2500 600-1600 300-1000 800-2200 



2000-4500 1200-2800 1000-3000 1500-3200 

 Each . 145.00 145.00 145.00 145.00 



