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 Length/Distance  | Convert from span to douzieme [watchmaking] |
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Common Length Conversions
Metric Length Conversions Unit Definition (span)
Span is the width of a human hand, from the tip of the thumb to the tip of the pinky finger. Unit Definition (douzieme [watchmaking])
The douzieme is a traditional unit of distance used in watchmaking. The word is French for "twelfth," and a douzième is equal to 1/12 Swiss ligne. This is about 188 micrometers (microns) or 7.4 mils.
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