Athene grids production started 70 years ago for the first transmission electron microscopes and still retain the qualities which made the early electron microscopists appreciative: sharp burr-free bars and corners, and close quality inspection. Different style have been added over the years. Style available are square mesh, hexagonal and slots. Standard diameter of 3.05mm and materials are in Cu, Ni and Au.
Holes 45µm square
Thin Bar, 10µm bar width, center-marked
Parallel Bar Grids (no picture at this time)