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This was a project I made for science homework. Its purpose is to compare the size of various objects to a specific object, like a small dust particle. This is as accurate as my eye can estimate! If an object is behind another object, the object in front is approx. 10 micrometers smaller than the object in the back. If an object is in front of another object, the object behind is approx. 10 micrometers larger than the object in front. measurement types unknown, either volume or area