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Resolution
A handy application for quickly changing the screen resolution...
calculate Diameter Changer rotating focal object Focal focal plane image diameter
Adastra FREESTAR
you can learn much of the stars with this versatile planetarium....
Live Tracking ArcSecond HGT calculate arcsecond arcsecond password finder
HGT File Viewer
HGT File Viewer - Viewing tool for SRTM 3 ArcSecond HGT elevation files...