Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 230
rongs are all eaten off. A new one is then put in HYDROMETER 231 service and the old one jammed into the bottom of thenew one as shown in Fig. 114. These zincs are hung from a spring clip shown in Fig.115, which lays across the top of the jar. The stud onthe zinc makes a tight friction fit with the… … Fig. 115. The hydrometer (Fig. 116) is a hollow glass floatloaded with shot so as to float upright. The heavier aliquid the more of the stem sticks up above the surface. These hydrometers are graduated on stem in actualspecific gravities or in degrees Baume (pronouncedBomay). One with a stem about…
Electricity
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