ughthe fixed vertical plane. For the above reasons, and owing tothe limited time at my disposal before the opening of the meet,I decided to use calibrated barographs for measuring and record-ing altitudes. By calibrating each barograph under known con-ditions of temperature and pressure so that the… … barograph (Figure 1) is simply a recording aneroid and consistsof a corrugated metal box (A) from which the air has beenpartially exhausted. The movements of the sides of this box,caused by variation of atmospheric pressure, are magnified bythe levers (B) and (C). At the end of the lever (C) is…
Aeronautics
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Famous airmen and their equipment [electronic resource] : with some notes on first-aid in emergencies (1912)](https://img.insideoutlibrary.com/img/200/ia-b20457716-28-26.webp)
