MR. HEDGER WALLACE'S question (NATURE, April 28, p. 268), “Why do makers of dairy thermometers mark their thermometers 62° F. as churning temperature?” interests us as thermometer-makers who are ...
Tel-Tru Manufacturing Company has introduced the Check-Set IV thermometer calibration system for the dairy industry. The Check-Set series of thermometer calibrators provides accurate, unambiguous, ...
A FIRM of manufacturers of thermometers, Messrs. Pastorelli and Rapkin, Ltd., to which we submitted Mr. Hedger Wallace's inquiry, informs us that though they have supplied tens of thousands of dairy ...
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