We consider the classical problem of a two-dimensional laminar jet of incompressible fluid flowing into a stationary medium of the same fluid [2]. The equations of motion are the same as the boundary layer equations for flow over an infinite flat plate, but with different boundary conditions. Numerical experiments show that, using an appropriate piecewise uniform mesh, numerical solutions are obtained which are parameter robust with respect to both the number of mesh nodes and the number of iterations required for convergence.