Growths on the surface of the eye can be unsightly and frightening. Most growths on the eye, which often occur as people age, pose no threat to health or vision and aren&rsquo;t cancers.
The unit of measure for static pressure is often inches of water (in. water). one inch of water is the suction needed to draw water up a straw one inch. pound per square inch static pressure (1 psi) is equal to 27.7 in. water static pressure. static pressure is given as Pascals (Pa).
If 14.7 psi is the reference value (and it usually is for most things on Earth that occur at sea level), then adding 14.7 psi to gauge pressure will give you actual pressure. For example, if your tire is inflated to 30 psig, then its actual internal pressure is 30 psi + 14.7 psi = 44.7 psi. Source(s):