Anode Wobbler function on TEM systems is used to align the electron gun axis with Gun Tilt switch by varying the 2^nd anode voltage periodically. This can be done at low magnifications, e.g. at 40,000 X. In practice, the operation can be slightly different from one system to another. For instance, for JEOL 2010F, the alignment procedure is:
         i) Select the BRIT TILT button on the panel.
         ii) Press the ANODE WOBBLER button.
         iii) Use the TILT knobs on the panel to make the beam expand and contract concentrically.