No. 54 863. 



Thermometers. 



577 



54852. 2:7. 54853. 1:5. 



54 854. 1 : 4. 



s. d. 



54.849. Demonstration Thermometer, Figure, filled with sulphuric acid, with plain black 

 and white scale, in Vi * milk glass scale, visible at a distance, range 15 to -f- 100 C., 



1 m long- 0.12.0 



54.850. Demonstration Thermometer after Friedr. C. G. Mtiller, with paper scale and coloured 

 graduation, Figure, divided every 5, filled with sulphuric acid, range 20 to 



+ 150 C., 0.5 m long 0.6.0 



These thermometers are of oval section, whereby the reflex action prevalent in a tube of circular 

 section is avoidc:!. 



54.851. -- idem, 1.00 m long, graduated from --20 to +150 C 0.12.0 



54.852. Water Thermometer, without mount, Figure, open scale (M. P., p. 145) ... 0. 4. 6 



54.853. Water Thermometer and Mercury Thermometer on one board, Figure, for showing 



the unequal expansion of water 0. 6. 



* 54,854. 3 small Thermometers, Figure, for objectively demonstrating the variation in 



expansion of different liquids, filled with mercury, sulphuric acid and alcohol respec- 

 tively, on stand . ff. 16. 



The thermometers have vessels of the same size and capillaries of the same width; the scales vary 

 in size corresponding to the different expansions. 



* 54,855. Projection Thermometer, divided from - - 40 to + 50 C. in whole degrees, with 



transparent glass scale and reversed figures 0. 6. 



* 54,856. Projection Thermometer, graduated from - - 10 to + 160 C. in whole degrees, cf. j 



Figure, with transparent glass scale and reversed figures, without stand . . . . ; 0. 6. 



* .~>4,857~Projection Thermometer with*" long stem, for calorimetric and similar experiments, 



divided from to -|- 30 C. in 1 / 10 , with reversed figures . . 0. 12. 



54,858 . Simplejcyh'ndrical Thermometer, __F_i_ g u r_e, for to 100 C., with paper scale . 0. l.o 



54,85!). Cylindrical Thermometer with milk glass scale from 20 to + 360 C., F i g u r e 0. 3. 



54.860. --idem, with scale etched on tube, 20 to + 360 C., 450 mm long, 67 mm i 

 diameter, Figure 0. 4. 



51.861. Cylindrical Thermometer, 0.5 m long, range from 10 to + 100 C., in 0.1, divided 



on milk glass, Figure i 0.10.0 



5 1 sii'j. Cylindrical Thermometer for calorimetric Work, Figure, from --10 to -- 40 C., 



divided in 0.1 0. 5. 



54,863. - - id e m, for very accurate work between 15 and 26 C., divided in 0.02, with 



the value for wain given 1.10.0 



The thermometer has a quite cylindrical lumen, so that the readings do not vary among each 

 other by more than ;v thousandth of their value. 



# Can lie used with the Projection Apparatus. 



Cl. 1700, 1701, 5293, 6150, 6149, 6148, 6146, 6147, 6145. 



37 



