Mechanical pressure is measured or approximated by bellows, or Bourdon tube that converts fluid pressure into drive. Normally h2o or mercury is utilised because the liquid within these columns. Water is applied any time you need higher sensitivity (its density is a lot less than liquid mercury, so its height https://jaidennerdp.link4blogs.com/52890954/bourdon-tube-stainless-steel-case-pressure-gauge-secrets