In 1845, the German engineer Rudolf Eduard Schinz found out the basic principle of pressure measurement through a Bourdon tube rather accidentally when he made an effort to fix deformed tubes by applying inner pressure. Rudolf Eduard Schinz regarded that pressurized tubes frequently showed the exact same change in condition. https://williamu582lvc5.p2blogs.com/32114214/diaphragm-pressure-gauge-no-further-a-mystery