creo3 config.pro option documentation for: TEMPLATE_HARNESSPART 
template_harnesspart
inlbs_harn_part.prt
*
, mmns_harn_part.prt
Sets the default template to be used for the harness part model.
inlbs_harn_part.prt
- The unit of measure for the harness part model is inches.
mmns_harn_part.prt
- The unit of measure for the harness part model is millimeters.