  New forms of electron beams have been intensively investigated recently,
including vortex beams carrying orbital angular momentum, as well as Airy beams
propagating along a parabolic trajectory. Their traits may be harnessed for
applications in materials science, electron microscopy and interferometry, and
so it is important to measure their properties with ease. Here we show how one
may immediately quantify these beams' parameters without need for additional
fabrication or non-standard microscopic tools. Our experimental results are
backed by numerical simulations and analytic derivation.
