imperialConversion.py

import Draft
from FreeCAD import Vector
'''
Use this macro to scale objects up by 25.4 in all axes.
This is needed for metric to imperial units conversion.
'''

sel=Gui.Selection.getSelection()

Draft.scale(sel,Vector(25.4,25.4,25.4),Vector(0,0,0))
FreeCAD.ActiveDocument.recompute()