Abstract
A scanning exoelectron emission microscope (SEEM) was constructed trially, and some observations were made by using the trial SEEM. This trial microscope can be turned into a scanning electron microscope (SEM) by a simple mechanical operation. Therefore, it is easy to observe the same point by both SEM and SEEM. The preliminary observations on aluminum tensile specimens seem to suggest that this scanning exoelectrtron technique will become a unique tool to investigate fracture mechanisms.