A Digital Automatic Multiple Pressure Recorder
Bert A Coss, Donald R Daykin, LEONARD D. JAFFE, Elmer M. Sharp · 1953
Note presenting a machine which will automatically measure and record 100 pressures in a range from 5 to 65 inches of mercury, in approximately 2.5 minutes, to an accuracy of 0.1 inch of mercury. The method used is to compare the unknown pressures with a scanning pressure whose value at any instant is known in digitalized form.