  We present the design, fabrication and discuss the performance of a new
combined high-resolution Scanning Tunneling and thermopower Microscope
(STM/SThEM). We also describe the development of the electronic control, the
user interface, the vacuum system, and arrangements to reduce acoustical noise
and vibrations. We demonstrate the microscope performance with
atomic-resolution topographic images of Highly oriented pyrolytic graphite
(HOPG) and local thermopower measurements in the semimetal Bi2Te3 sample. Our
system offers a tool to investigate the relationship between electronic
structure and thermoelectric properties at the nanoscale.
