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



491 



----- 



Xo. ism 



No. 13444. 



No. 13464. 



13432. THERMOMETERS, Solid Stem, Engraved Scale, similar to No. 13426, but more accurately grad- 

 uated and furnished with factory certificate. No A B C 



Range, degrees C -10 to 100 -10 to 200 -10 to 320 



Each $2.75 S.25 3.50 



13436. THERMOMETERS, Enclosed Milk Glass Scale, diameter 8 to 10 mm, with Centigrade scale. 



No A B C 



Bange, to, degrees C 110 200 350 



Each 2.25 S.OO 3.50 



13438. THERMOMETERS, Solid Stem, Engraved Scale, with fractional divisions, for general labora- 

 tory work where highest degree of precision is hot required. With Centigrade scale. Diam- 

 eter, about 7 mm. No A B C D E F G 



Bange, degrees C 0-50 0-50 0-100 0-100 100-200 0-200 100-200 



Size of subdivisions, deg. C . . % }fo H Mo % % Mo 



Length, cm 30 38 40 60 50 60 60 



Each 3.50 4^0 4.00 4.50 4^5 6.00 7.00 



13442. THERMOMETERS, High Range, Solid Stem, Engraved Scale, filled with nitrogen above the 



mercury. Diameter, about 7 mm. No A B 



Bange, degrees C 100-400 100-550 



Size of subdivisions, degrees C 2 2 



Length, cm 40 40 



Each S.50 5.00 



13444. THERMOMETERS, High Range, same as No. 13442, but graduated in Fahrenheit scale. 



No A B 



Bange, degrees F 200-750 200-950 



Size of subdivisions, degrees F 5 5 



Length, cm 40 40 



Each S.50 5.00 



13446. THERMOMETERS, High Bange, Solid Stem, Engraved Scale, filled with carbon dioxide under 

 pressure of 20 atmospheres. Diameter, 7 to 8 mm. 



No A B 



Bange, degrees C 100-500 180-550 



Size of subdivisions, degrees C 1 1 



Length, cm 40 40 



Each 9.00 9.00 



13452. THERMOMETER. Low Range, Solid Stem, Engraved Scale, for low temperatures. Bange, -20 



to 40C., in 1" divisions. Length, about 25 cm; diameter, 8 mm 2.00 



1,",454. THERMOMETER, Low Range, Solid Stem, Engraved Scale, Alcohol Filled, for low tempera- 

 tures. Bange, -50 to 50C., in ig e divisions. Length, about 30 cm; diameter about 8 mm 4.50 

 13456. THERMOMETER, Low Range, Solid Stem, Engraved Scale, Pentane Filled, for very low tem- 

 peratures. Bange, -200" to 50C., in 1 divisions. Length, about 35 cm; diameter, about 



10 mm 10.00 



1345S. THERMOMETER, Low Range, Solid Stem, Engraved Scale, Toluol Filled, for low temperatures. 

 Bange, -100 to 50"C., in 1 divisions. Length, about 30 cm 7.50 



THERMOMETERS, NORMAL OR PRECISION 



13464. THERMOMETERS. Normal or Precision. Solid Stem. Engraved Scale, for precision measure- 

 ments where highest accuracy is essential. Thermometers reading above 250C. are filled 

 with nitrogen. Graduated according to the requirements of the United States Bureau of 

 Standards. Without certificate. 



No A B C D E F 



Range, degrees C -15 to 50 -15 to 100 -5 to 105 -10 to 110 to 250 to 300 



Size of subdivisions, deg. C. ^ 1 % ^ % 1 



Length, cm 38 30 38 60 45 45 



Each 12.00 8.00 10.00 18.00 9.50 7.50 



13463. THERMOMETERS. Normal or Precision, same as No. 13464, but standardized by the United 

 States Bureau of Standards, with certificate. 



No A B C D E F 



Each 15.00 14.00 16.00 24.00 15.50 15.00 



