Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 337
s are:height, 9f inches; width, 5inches. Base, 5|- inches;height, 3-| inches. It is heatedby a gas burner,—the gas pipe,^, coming from the left side,and entering the box at thebottom, 4. The flow is auto-matically regulated by steeland brass compensating lami-nae in the horizontal tube 2, seen in… … THE WA TCH ADJUSTERS MANUAL. 325 plug allows sufficient gas to pass to avoid extinguishing theflame, even when the main gas supply is closed. (759.) The cold-box.—For testing watches in cold, they maysimply be kept in a cold room, if the season is suitable, orplaced in a tightmetal box and keptin…
Clocks and watches
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
