Carriage returns (x0d).  LF are line feeds (x0a).  Windows uses both CRLF (x0d0a).  Some platforms such as unix and (I thought) mac use LF only or CR only.  OBJ is a text format file so it can be any of the three possibilities for line endings.

I have tested the utility against files I manually created with CRs, LFs and CRLFs but I wanted originals to test against.  I have tested it against OBJs from Poser, Modo, UVMAPPER and HEX.  So far so good.  It appears to scale them properly and can be called from a BAT file to automate the process which is what I was looking for.