HydrometerThe present invention relates to hydrometers having thermometers combined therewith, and more particularly to a correction chart- and cursor or finder therefor associated with the hydrometer. Hydrometers for testing antifreeze solutions used in the radiators of automobiles frequently carry......
The present invention relates to thermohydrometers and more particularly to a hydrometer in which the barrel and float are positioned above the hand held bulb when being read. The conventional thermohydrometer employed for testing antifreeze solutions in the radiators of motor vehicles or battery......
Antifreeze tester Another automotive use of hydrometers is testing the quality of theantifreezesolution used for engine cooling. The degree of freeze protection can be related to the density (and so concentration) of the antifreeze; different types of antifreeze have different relations between measured...
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edge surface and reflected to the surface 15. There has also been disclosed a very simple, inexpensive yet highly efficient hydrometer for indicating the specific gravities such as that of a battery electrolyte or radiator coolants such as commercial forms of antifreezes and the like, now ...
This invention has special reference to hydrometers of the type used for testing the antifreeze solution of automobile radiators, the electrolyte of storage batteries, and for like testing purposes. Considerable difficulty and inconvenience is occasioned with hydrometers of this type due to...Evar, ...