Vvooden case are made of two thicknesses of extra 452 THE MODERN CLOCK. thick glass, and are firmly clamped, by screws through theirsashes or some other means, to the frame of the case, wehave the best form possible for our completed case of thetype I have described. It now remains to provide a… … Fig. 151. Section tlirough dock room of the Waltliam Watcli Company water tank outside, whether of gas or kerosine, to be auto-matically raised or lowered by any such thermostat arrange-ments as are in common use with chicken incubators, whenthe temperature varies from the point desired.…
Clocks and watches
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