Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 173
hot water thermometer. (See Fig. 65). Thesethermometers are also made angle-shaped at the shank, sothat if desired they can be screwed into a tee placed invertical pipe, and still allow the scale to stand vertically.The thermometer is for the purpose of showing at whattemperature the feed water… … ;irm
