Question

what are the units of pressure gauges? state their conversion factor to convert them in to bar

Answer 1

The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N.
Metric
kilopascal (kPa) 100
hectopascal (hPa) 1,000
megapascal (MPa) 0.1
millibar 1,000
pascal (Pa) 100,000
gram per square centimeter (gf/cm²) 1,020
kilogram per square centimeter (kgf/cm²) 1.02
tonne per square centimeter 0.00102
kilogram per square meter (kgf/m²) 10,197
tonne per square meter 10.2
newton per square meter (N/m²) 100,000
kilonewton per square meter (kN/m²) 100
meganewton per square meter (MN/m²) 0.1
newton per square centimeter (N/cm²) 10
newton per square millimeter (N/mm²) 0.1