Two grids are joined by a thin 'hinge', allowing one grid to be folded on top of the other, trapping the specimen between them. Molybdenum grids are especially useful in ion milling applications because of its resistance to etching.ĭouble Folding Grids (available from GILDER,Graticules Optics, VECO)ĭouble grids, offering a combination of mesh support values, are used primarily in metallurgical applications for supporting thin metal foils. The larger the slot dimension the thicker the grid, rigidity is essential when using formvar/carbon films to avoid ‘cracking’. Slot Grids (available from GILDER, Graticules Optics, VECO) The larger the aperture dimension, the thicker the grid, for maximum rigidity. Hexagonal Mesh (available from GILDER, Graticules Optics, VECO)Īs an alternative to square mesh, hexagonal mesh grids offer a higher support factor for a given mesh repeat distance.Īperture Grids (available from GILDER, Graticules Optics, VECO)Īperture grids consist of one central circular hole. Parallel bar grids are particularly useful for obtaining information from sequential ribbons of sections. Parallel and Rectangular Mesh Grids (available from GILDER, Graticules Optics, VECO) Bar/hole width change with increasing mesh repeat. Square Mesh (available from GILDER, Graticules Optics, VECO, (coated grids)) As a general guide the lower the mesh repeat, the thicker the grid (50Mesh: 25µm, +/- 5µm 600Mesh: 6µm, +/- 2µm). Gilder grid thickness varies with the mesh repeat.
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