A device for producing a Fano extensional flow with a total pressure drop of more than 1 atm has been designed and tested with Newtonian fluids. It was found that the shape of the Fano column profile was best fit by the equation D i /D=C 1 exp (C 2 z/L), where C 1 and C 2 are constants, D i is the inside diameter of the Fano nozzle, L is the total height of the column, and D is the diameter of the column at height z. Extensional viscosity calculations for glycerine Fano columns produced values equal to approximately three times the shear viscosity.