![]() 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.All Graticules Optics grids are approximately 15-25µm thickness, with the exception of stainless steel which is 12µm and titanium which is 15µm.Handle, Rim tab: Some grid types are available with handle (Graticules Optics, VECO) or a rim tab (Gilder) for a better handling. Rim mark: An asymmetrical mark in the rim allows for precise orientation of the grid, and aids in the identification of each side. Older grids have a ‘reverse arrow’ center marking to distinguish each half of the grid. Most of the grid types are available with a center and/or rim mark.Ĭenter mark: Many grids have an asymmetrical center marking, enabling the four quadrants of the grid to be distinguished.
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