Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 338
er, is to befilled with broken ice, well packed down with a flat-ending stick.One or two glass shelves are used in the chamber, as in theoven. The thermometer is here attached to the door, and win-dows for observation are omitted, as the condensation of mois-ture upon them by the cold air within… … 326 THE WATCH ADJUSTERS MANUAL. the box. Legs are attached to support the box; and when thecover is removed, the whole top should be open for convenienceof filling and packing the ice. (760.) Degrees of cold.—If ice alone is used, a pretty constanttemperature of about 35° will be maintained. When a…
Clocks and watches
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