Apple iMac (Mid 2006) - Manual (Page 84)

84 Appendix B Safety, Use, and Care Information
You may have to raise your chair so that your forearms and hands are at the proper
angle to the keyboard. If this makes it impossible to rest your feet flat on the floor, you
can use a footrest with adjustable height and tilt to make up for any gap between the
floor and your feet. Or you may lower the desktop to eliminate the need for a footrest.
Another option is to use a desk with a keyboard tray that’s lower than the regular work
surface.
Thighs tilted
slightly
Shoulders
relaxed
Screen positioned to
avoid reflected glare
Forearms and
hands in a
straight line
Forearms level
or tilted slightly
Lower back
supported
Feet flat on the floor
or on a footrest
Top of the screen at or
slightly below eye level
(You may need to adjust
the height of your display
by raising or lowering
your work surface.)
Clearance under
work surface
45–70 cm (18–28 in.)