Wipe it clean after use: Use a clean and dry cloth or tissue to wipe the ruler clean after use. This will help remove any dust, dirt or smudges on the ruler and prevent them from building up over time.
Avoid using harsh chemicals: Do not use harsh chemicals or solvents to clean the ruler as they may damage or discolor the markings on it. Instead, use a mild soap or a mixture of water and vinegar to clean it.
Store it properly: Keep the ruler in a clean and dry place where it is not exposed to direct sunlight, moisture or extreme temperatures. This will help prevent the ruler from getting damaged or discolored.
Use a protective case: If you frequently carry your ruler around, consider using a protective case to keep it clean and protected from dust and scratches.
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