Need some help with specs on these doubles

[Scared Silly]

Faber MP120 3180psi+10% 120 cuft (at 3498 psi) 7.25" dia 28.64" tall 48.3 lbs buoyancy -7.22 empty -16.22 full

These cylinders are bricks and unless one wants to down like bloody led zeppelin they should not be doubled.

 

[MaxBottomtime]

I used to love my double 120s. They allowed me to see things most divers will never see.