578 



Thennometry. 



No. 54 864 



54 876. 1 : 6. 



54867. 1:6. 54871. 1:5. 



54872. 1 = 6. 54875. 1:10. 



54 877. 1 : 3. 



54.864. Cylindrical Thermometer for temperatures of to +550C., filled with carbonic acid * 



gas over the mercury at 20 atmospheres 1.10.0 



54.865. Cylindrical Thermometer for temperatures of 100 to -f- 50 C., for cold mixtures, 

 divided in whole degrees 1. 5. o 



54.866. Cylindrical Thermometer for temperatures of 200 to C., for cold mixtures . 1. 8. n 



54.867. Standard Thermometer, Figure, from --5 to 4-50 C., divided in 1 / m , with 

 calibrated tube, with glass lug at top, in wood box o. 15. o 



54.868. - - idem, tested every 10, with Test Certificate of the Physikalisch-Technische 

 Eeichsanstalt, Charlottenburg 1. 0.0 



54.869. Standard Thermometer from --5 to +100 C., constructed as No. 54,867 ... 1. o. o 



54.870. -- idem, tested every 10, with Test Certificate of the Eeichsanstalt, Char- 

 lottenburg 1. 10. o 



54.871. Thermometer on Wood Board, for schools, Figure, from --40 to +50 C., 



30 cm long Each o. 1. o 



Per dozen <>. Hi. o 



54.872. Thermometer for screwing to the window, Figure, round, 25 cm long, with Centi- 

 grade graduation from --40 to -f- 50 C., with porcelain scale enclosed in glass tube. 



with brass fittings 0. I. ( 



54.873. Clinical Thermometer (M. T., p. 138) 0. 3. 



54.874. Metastatic Thermometer of Walferdin (Beckmann's Thermometer), for accurately 

 measuring small temperature differences, for comparison with a standard thermometer 



(M. P. Ill, Fig. 16) 1. Hi. i 



'1,874 a. Hypsometric Thermometer (for altitude measurements), 22 cm long, from 87 102 ( '. 



graduated in l / 20 1. 1 '>.(> 



54871 b. -- idem, 50 cm long, from 92 to' 102 C., divided in Vso 2. 6. 



54.875. Long Stem Thermometer with metal mount, Figure, range to 200 C., length 



of immersion tube 60 cm 1. d. d 



.'1.876. Angle Thermometer in Metal Mount, F i gu re, range to 200 ('., with side tube 



24 cm long .1. o. o 



Thermometers Nos. 54,875 and 54,876 are arranged in such manner that the mercury bulb i 

 in the inside of a boiler, box, etc.. while the scale (surrounded l>y a metal mount to protect it from 

 knnckl) is placed outside t lie vessel in question. 



Cl. 



1711. 

 170'A 61J5, 0157. 1710, 1703. 



