EM-Tec SC2R SampleClamp with a recessed area of 25x15mm. The recessed part leaves the sample area to be examined fully free standing. This allows for a complete rotation of the sample to examine all sides. The recessed area tends to be out of focus which leaves more emphasis on the sample. Tip: to avoid signal from the recessed area, one could place a carbon disc underneath the sample; this will greatly reduce both electron and X-ray signal.