Unit of length

canna French gauge arpent elevation above sea level in meters Hiro metre rod thou dedo light-hour parsec shelf metre Danish mile dan light-minute gauge block league Horizontal pitch rack unit X unit point thread step trabucco Standard wire gauge centimetre millimetre micrometre meh nanometre linear metre Lea astronomical unit span megalithic yard decimetre Paris point Planck length verst smoot ell ell inch skein kan mile light-nanosecond Tobe pica light-day