494 



CENTEAL SCIENTIFIC CO., CHICAGO, U. S. A. 



No. 13548. 



No. 13562. 



No. 13564. 



THERMOMETERS, Calorimeter, Solid Stem, Engraved Scale, as used with oxygen 

 bomb calorimeters. Graduated to meet the requirements of the United States 



Bureau of Standards. No A B 



Range, degrees C 18-30 20-30 



Size of subdivisions, degrees C 1/50 1/100 



Length, inches 18 24 



13528. Without certificate $15.00 20.00 



No. 13558. 13529. With Bureau of Standards certificate 30.00 35.00 



THERMOMETERS, Calorimeter, Solid Stem, Engraved Scale, as used with Parr Calorimeters. 

 Graduated to meet the requirements of the United States Bureau of Standards. 



No A B 



Range, degrees F 65 to 90 65 to 105 



Size of subdivisions, degrees F 1/20 1/20 



13532. Without certificate 10.00 13.00 



13533. With Bureau of Standards certificate 12.00 15.00 



THERMOMETERS, Gas Calorimeter, Solid Stem, Engraved Scale, according to the recommenda- 

 tions of the American Gas Institute, as used in Junker and other gas calorimeters. Length, 

 about 45 cm; diameter, about 8 mm. (See Report of Committee on Calorimetry for 1912.) 



No A B 



Range 60 to 110F. 15 to 40C. 



Size of subdivisions, degrees 1/10 1/10 



13536. With factory certificate. 18.00 18.00 



13537. With Bureau of Standards certificate 26.00 25.00 



13540. THERMOMETER, Gas Calorimeter, Solid Stem, Engraved Scale, high grade. Graduated from 



30 to 150 F., in 1/10 divisions 8.50 



13546. THERMOMETER, Clinical, One Minute, first grade, with magnifying tube, in hard rubber case, 

 with factory certificate 1.50 



13548. THERMOMETER, Clinical, Veterinary, first grade, pear-shapea bulb, ring top, with magnifying 



tube, in hard rubber ease, with factory certificate 1.75 



THERMOMETERS, Dairy, see Milk Testing Apparatus. 



13558. THERMOMETER, Dough Testing, of glass in 7 inch nickel-plated iron case, with 11 inch steel 

 stem. The scale is of silvered metal with black rilled figures and graduations. Range, 30 to 

 120 F 8.00 



13562. THERMOMETER, Household, standard grade, 10 inch, heavy japanned tin case, accurately tested. 

 Approximate range. 20 to 120F 1.35 



13564 THERMOMETER,, Household, 8 inch, metal scale, oak back, beveled edge, with brass guard over 

 bulb. Approximate range, 20 to 120F 1.00 



