A method includes receiving a measurement associated with an anisotropy of a first surface and {HEAD ~ a measurement} associated with an anisotropy of {TAIL ~ a second surface} of a sheet of material 
A method includes receiving a measurement associated with an anisotropy of a first surface and { HEAD ~ a measurement } associated with an anisotropy of { TAIL ~ a second surface } of a sheet of material
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH