File:NSRW Thermometer.jpg
![File:NSRW Thermometer.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/8/84/NSRW_Thermometer.jpg/261px-NSRW_Thermometer.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:35, 1 October 2019 | ![]() | 263 × 604 (53 KB) | Bob Burkhardt | {{Information |description ={{en|1=Four stages in the manufacture of a mercurial thermometer. First, a piece of thick-walled, capillary tubing of uniform bore is selected; a bulb is then blown on one end of this tube, after which the bulb is filled with mercury. It is then highly heated and “sealed off.” The last step is the graduation of the tube of the thermometer.}} |date =published 1914 |source =“Thermometer,” ''The New Student's Reference Work'', 1914, v. 4, p. 1901.... |
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