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Length scalesThe scientific unit for length is the meter, symbol m.micro-meter (µm)A micro-meter is one millionth of a meter. 1 µm = 0.000001 m = 10-6 m.nano-meter (nm)A micro-meter is one thousand millionth of a meter. 1 nm = 0.000000001 m = 10-9 m.Ånsgtrom (Å)An Ånsgtrom is one ten-thousand millionth of a meter. 1 Å = 0.0000000001 m = 10-10 m.
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