xrandr
 SZ:    Pixels          Physical       Refresh
*0   1280 x 1024   ( 373mm x 270mm )  *50   54   55   56   57   58
 1   1152 x 864    ( 336mm x 228mm )   51   61   62   63
 2   1024 x 768    ( 298mm x 203mm )   52   65   66   67   68   69   70   71
 3    800 x 600    ( 233mm x 158mm )   53   76   77   78   79   80   81   82   8
3
 4   1280 x 960    ( 373mm x 253mm )   59   60
 5   1152 x 768    ( 336mm x 203mm )   64
 6    960 x 720    ( 280mm x 190mm )   72
 7    928 x 696    ( 270mm x 184mm )   73
 8    896 x 672    ( 261mm x 177mm )   74
 9    832 x 624    ( 242mm x 165mm )   75
 10   800 x 512    ( 233mm x 135mm )   84
 11   720 x 400    ( 210mm x 105mm )   85
 12   640 x 512    ( 186mm x 135mm )   86   87   88
 13   640 x 480    ( 186mm x 126mm )   89   90   91   92   93   94
 14   640 x 400    ( 186mm x 105mm )   95
 15   640 x 350    ( 186mm x  92mm )   96
 16   576 x 432    ( 168mm x 114mm )   97
 17   576 x 384    ( 168mm x 101mm )   98
 18   512 x 384    ( 149mm x 101mm )   99   100  101  102  103
 19   416 x 312    ( 121mm x  82mm )   104
 20   400 x 300    ( 116mm x  79mm )   105  106  107  108  109
 21   360 x 200    ( 105mm x  52mm )   110
 22   320 x 240    (  93mm x  63mm )   111  112  113  114
 23   320 x 200    (  93mm x  52mm )   115
 24   320 x 175    (  93mm x  46mm )   116
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none