  We have used an atomic force microscope to make precision measurements of the
Casimir force between a metallized sphere of diameter 196 microns and flat
plate. The force was measured for plate-sphere separations from 0.1 to 0.9
microns. The experimental results are consistent with present theoretical
calculations including the finite conductivity, roughness, and temperature
corrections. The root mean square average deviation of 1.6 pN between theory
and experiment corresponds to a 1% deviation at the smallest separation.
