An experimental apparatus is described which permits excellent sensitivity and energy resolution in atomic and molecular beam surface scattering experiments. It is suggested that the Boxcar Integrator, a low cost, commercial instrument, is ideally suited to these experiments and, for helium scattering, yields more information than the conventional lock-in amplifier technique. Preliminary data on low-energy helium scattering from unoriented W(100) facets, produced by annealing a tungsten ribbon, shows sharp diffraction effects due to a surface structure grating at least 70 Å in characteristic size. Applications to inelastic scattering studies are briefly discussed.