XMM Ruler
This English/metric ruler
showcases some of the X-ray images obtained
using XMM-Newton, and provides descriptive captions on the reverse side.
While the ruler itself is no longer available, the graphic for the
ruler is shown below and can be downloaded as a PDF
by clicking the image. You can also
read a more detailed description of each image.

XMM-Newton Ruler Activity: "Estimation & Measurement to the
Nearest Centimeter"
An activity using the XMM-Newton ruler for students Grades 4-5
was created by a school teacher, and you can download it through the links
below.
These activities were created by:
Nancy Cooper
Science Resource Teacher
Jennie Dean Elementary
Manassas City Schools
Thank you Nancy.
If you have any questions concerning XMM-Newton send e-mail to xmmhelp@athena.gsfc.nasa.gov.
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