magnifier needed

Is there a useful display magnifier for Linux, please? I can easily
increase the font size in Firefox and do quite often, but there are some
graphic images in which the detail is just too small for these old eyes.

Ideally I'd like an application that starts up with a rectangle that can
be moved about the display with the mouse, magnifying everything under
it. A mouse click will iconify the magnifier until it is selected again
for usage. Things like mag. power, rectangle size, border etc. could be
options.
$ man -k magnif
gnome-mag (rpm) - GNOME Magnifier
xmag (1x) - magnify parts of the screen
zoom (6x) - wander around magnified desktop

xmag is too limited in scope as it only selects a fixed small portion of
the display to enlarge rather than moving about, and I can't find zoom
anywhere on the CentOS-5.2 system.
.

Relevant Pages

  • Re: Which Monitor For Someone With Poor Eyesight?
    ... For what it's worth, if you are using windows, they have a "magnifier" ... accessories> accessibility> utility manager. ... Bottom line was to help his dad. ... It might work better with a larger display. ...
    (alt.sys.pc-clone.dell)
  • Re: Which Monitor For Someone With Poor Eyesight?
    ... For what it's worth, if you are using windows, they have a "magnifier" ... accessories> accessibility> utility manager. ... Bottom line was to help his dad. ... It might work better with a larger display. ...
    (alt.sys.pc-clone.dell)
  • Re: to increase text size
    ... In Internet Explorer go to view on the menu, scroll down to text size and ... Using the magnifier it should be possible for some one ... Personally I've never understood how a person with vision difficulties ... display. ...
    (alt.support.chronic-pain)
  • Re: why do we use print preview modes?
    ... But text boundaries are not displayed in Print Preview even when the Magnifier is turned off, and I don't see any way to display them. ... ISTR that in some earlier versions there was something like text boundaries in PP that allowed you to change the margins in that view. ... And the manual clearly states that you can edit in PP by turning off the magnifier. ... Microsoft Word MVP ...
    (microsoft.public.word.newusers)
  • Re: magnifier needed
    ... Ideally I'd like an application that starts up with a rectangle that can be moved about the display with the mouse, ... You can set up X so that your display supports multiple resolutions. ... When you switch to a lower resolution, the entire screen (viewport) becomes the "magnifier," but the desktop stays the same size. ...
    (comp.os.linux.misc)