สวิตช์ไฟและไพล็อตแลมป์ สวิทช์ปุ่มกด Liquid-column gauges include a column of liquid inside a tube whose finishes are exposed to various pressures. The column will increase or drop till its body weight (a drive applied as a consequence of gravity) is in equilibrium Along with the strain differential in between the two finishes https://pressuregauge22111.smblogsites.com/6807513/detailed-notes-on-เกจว-ดแรงด-น