This upload consists of several files that show a solid model of a "corner cube scribe"
as described by a thread on www.practicalmachinist.com, General Category, titled:
"trick scriber project".  The files are meant to depict one persons understanding of the
part to be made.  The following files are attached:

corner_cube_scribe.zip
     which contains: corner_cube_scribe.stp		STEP 2.14 format solid model
                     corner_cube_scribe.igs     IGES format solid model
                     corner_cube_scribe.prt     Unigraphics NX3 solid model

corner_cube_scribe.pdf     Adobe Acrobat viewable drawing of the part

corner_cube_scribe.txt     this file.