Apple Monitors: Radius-of-Curvature Specifications

I want to put a touch screen or raster shield directly on the glass front of a monitor. What are the "curvature" measurements of Apple monitors?
The monitor radius-of-curvature specifications are:

Monitor  Monitor                                   Horizontal  Vertical
Model    Name                                      Curvature   Curvature

-------  ----------------------------------------  ----------  ---------

M0400    Apple High-Resolution Monochrome Monitor    1200mm     1200mm

M0402    Apple Two-Page Monochrome Monitor           1730mm     1730mm

M0404    Apple Macintosh Portrait Display            1200mm     1200mm

M0401    AppleColor High-Resolution RGB Monitor       660mm     none

M2494    Apple Multiple Scan 17 Display              1300mm     40,000mm

M1823    Apple Multiple Scan 20 Display              1170mm     40,000mm

M4436    Apple Multiple Scan 1705 Display            1100mm     1370mm


M3323    AppleVision 1710AV Display                  1300mm     40,000mm

M3322    AppleVision 1710 Display                    1300mm     40,000mm

Published Date: Feb 18, 2012