Types of combinationĭOUGLAS ceiling suspension grids comprises main runners installed at not more than 1200mm centers, securely fixed by pre-straightened suspension wire. ![]() The Main Runner is slotted for cross tees at 150mm or 6" centers to give maximum flexibility in the ceiling lay out. It is given to ensure that the system is manufactured to a very high quality level. The tees section is with pre-painted capped. Special patterns can be manufactured on request.Our ceiling suspension grids are double web cold-rolled sections, manufactured from hot-dipped galvanized steel, conforms to JIS G3302 SGCC. These areas range from blocks of 1 to 9 grid cells, and can typically be relocated using an alphabetical and/or numerical code built into the mesh. The Finder range of grids are useful in applications where specific areas of mesh need to be uniquely identified. The grids have a curved securing tab which folds to the curvature of the doubled grid.įinder, Coordinate, Reference Grids (Gilder, Graticules Optics) 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).
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