It is vital that Supervisors are familiar with both Metric & Imperial measurement systems.

1 Atmosphere   

=  10.08 metres of seawater

  =  33.07 feet of seawater

   =  33.90 feet of fresh water

   =  1.033 kg/cm2

  =  14.696 psi

  =  1.013 bar

   =  101 kPa

   =  760 mmHg (Torr)

1 Bar               

=  9.931 metres of seawater

   =  32.63 feet of seawater

  =  1.019 kg/cm2

   =  14.50 psi

  =  0.98 atm

   =  100 kPa

  =  750 mmHg (Torr)

• IMCA D022-ver2 2016 DIVE SUPERVISORS MANUAL. Chapter 2, Section 1-6, Page 9-10

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