If we were to order the microscopy techniques commonly used in
nanotechnology for flexibility (many modes),
broad range of applicability (dimensions and type
of samples), and ease of use (sample preparation
and operational), what would be a reasonable order?

Scanning electron microscope (SEM)

Optical microscope

Tunneling electron microscope (TEM)

Atomic force microscope (AFM)

Scanning tunneling microscope (STM)