screen name     :0.0
pixel width     1024
pixel height    768
scaling         1.3330053300533
mm width        271
mm height       203

$ perl -MTcl::pTk::TkHijack pm11129491.pl

screen name     :0.0
pixel width     1024
pixel height    768
scaling         1.3330053300533
mm width        271
mm height       203