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The black diamond markings on a tape measure, typically at 19.2-inch intervals, are used for truss layout in construction. This spacing allows builders to reduce the number of support beams while maintaining structural integrity, saving time and materials.
It’s also used in concrete block construction to efficiently distribute weight with fewer beams. For DIY projects, the black diamond markings can help locate studs, or ensure even spacing for projects like fencing, decking, or shelving, making construction easier and more cost-effective. However, be aware that this spacing may not always meet local building codes.
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