  We demonstrate temperature measurement of a sample attached to the end of a
cantilever using cantilever magnetometry of solid air ``contamination'' of the
sample surface. In experiments like our Magnetic Resonance Force Microscopy
(MRFM), the sample is mounted at the end of a thin cantilever with small
thermal conductance. Thus, the sample can be at a significantly different
temperature than the bulk of the instrument. Using cantilever magnetometry of
the oxygen paramagnetism in solid air provides the temperature of the sample,
without any modifications to our MRFM (Magnetic Resonance Force Microscopy)
apparatus.
