492 



CENTRAL SCIENTIFIC CO., CHICAGO, TJ. S. A. 



1 'AUJi" " 1 iU'"I"A'i 1 i ll l" l iU>"J 



No. 13500. No. 13506. 



7373. THERMOMETER, Solid Stem, Engraved Scale, for Use with Moisture Testers. Length, 12 

 inches. Range, to 200 Centigrade in 1 divisions. With factory certificate $2.00 



13486. THERMOMETER, Titer Test, Solid Stem, Engraved Scale, according to the requirements of the 

 Association of Official Agricultural Chemists. Range, 10 to 65 C., in 1/10 divisions with 

 zero point marked, and with reservoirs at upper end and between and 10 marks. Length 

 of thermometer, 38 cm; length of bulb, 3 cm; distance between top of bulb and 10 mark, 3 to 

 4 cm; diameter of stem and bulb, about 6 mm. (See Journal of the Association of Official Agri- 

 cultural Chemists, Vol. II, No. 3, Part II, November 15, 1916, page 302; Journal of Industrial 

 and Engineering Chemistry, Vol. X, No. 4, for April 1918, page 317) 9.90 



THERMOMETER FOR SPECIAL USES 



13496. THERMOMETERS, Armored, Solid Stem, Engraved Scale, with armor of seamless steel tubing, 

 nickel-plated, with lower end perforated around bulb to permit circulation. Thermometer is 

 suspended from screw cap and easily removed. Scaled for 3 inch immersion. 



13497. 

 13498. 



13499. 

 13500. 

 13502. 



I) 



30-750 



2 



16 



8.25 



D 

 5.80 



D 



0-400 

 1 



16 

 8.25 



D 

 5.80 



E 



100-950 



5 



16 



11.55 



E 

 9.10 



E 



50-510 

 2 



16 

 11.55 



E 

 9.10 



Threaded for 



inch pipe and fitted with 

 2 l / 2 3V> 4% 



2.30 3.00 3.65 



13503. 

 13506. 



WELLS, Steel, for use with Nos. 13496 to 13499. 



screw plug. Length below thread, inches ............. iy, 



Each ............................................. 1.65 



THERMOMETERS, Armored, Asphalt and Sand Testing, Solid Stem, Engraved Scale, with seam- 

 less brass tubing, nickel-plated, and with pointed bulb to facilitate introduction into the 

 sample. Constructed of glass tubing with walls of double thickness to withstand severe 

 usage. Scaled for 3 inch immersion, except No. A, which is for total immersion. 

 No .............. ..,. ............................... A B C 



Range, degrees F ................................. 200-400 100-600 200-750 



Size of subdivisions, degrees F ..................... 5 5 5 



Length, inches ................................... 6 16 16 



TTse .............................................. inspection asphalt sand 



Each ............................................ 5.00 6.60 8.25 



THERMOMETER TUBES, extra, for No. 13502. No .............. A B C 



Each ....................................................... 2.50 4.15 5.75 



THERMOMETERS, Armored, Asphalt, with Protected Bulb, and engraved stem. The bulb is im- 

 mersed in a bath of mercury contained in the long slender steel cup forming ths stem, afford- 

 ing protection and making it almost as quick reading as a bare glass bulb. Length of case, 

 10 inches. No ................................................... A B 



Range, degrees F ............................................... 200-400 200-650 



Size of subdivisions, degrees F .................................. 2 5 



Each ...................... 6.60 6.60 



