Methods of Production and Calibration of Combination Vapor Pressure and Gas Dial Thermometers to January 26, 1945

摘要

The methods of production and calibration of combination vapor pressure and gas dial thermometers are described. The methods of construction and testing of the Bourdon springs as well as the bulbs are given. These procedures yield a thermometer which gives accurate readings with a single standard dial. The routine checking of the final thermometer at certain fixed points is outlined as well as the checking method for the occasional complete calibration of the instrument.