The GetDimensionUnit command returns the unit associated with dimension d in the Solidworks file p.

$\mathrm{with}\left(\mathrm{CAD}\left[\mathrm{SolidWorks}\right]\right)\:$

$\mathrm{OpenConnection}\left(\right)\:$

$\mathrm{doc}≔\mathrm{OpenDocument}\left(''c:/mypart.sldprt''\right)$

$\mathrm{doc}≔0$

$\mathrm{doc}≔\mathrm{GetDimensionUnit}\left(\mathrm{doc}\,''D1@Sketch1@mypart.Part''\right)$

$⟦'\mathrm{mm}'⟧$

$\mathrm{doc}≔\mathrm{CloseDocument}\left(\mathrm{doc}\right)$

$\mathrm{CloseConnection}\left(\right)\:$