Use of the Oscillograph for Measuring Non-Electrical Quantities
Douglas F. Miner, W. B. Batten · Transactions of the American Institute of Electrical Engineers · 1929
The electromagnetic oscillograph has proved to be a useful instrument for obtaining recorded measurements of non-electrical quantities. The problems of application involve the translation of mechanical phenomena into electrical changes which are proportional. Several typical applications are described showing how motion, time, stress, pressure, etc., are measured.