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The gap at the end of a ruler is a design choice to protect the zero mark from wear and ensure measurement accuracy. Always align your object with the printed zero line, not the physical edge of the ruler, to prevent systematic measurement errors in your home projects.
Learn why many rulers have a gap before the zero mark and how to measure accurately. Stop using the ruler edge and start using the zero line for precision.
Learn the best ways to set a 4x4 post for your yard projects. We compare concrete, steel spikes, and expanding foam for strength, longevity, and ease of use.