My Gustav Becker Vienna Regulator wall clock is 51 inches in length. It is a 2-weight regulator that runs on an eight day cycle. In order to bring the weights up I must open the access door and insert the winding crank into the arbours on the clock face. I then raise the weights to their highest safe level. During the process of opening the access door and winding the clock there is always the risk of moving the clock, disrupting the level thus creating a condition where it is out-of-beat. In short the stabilizers, located on each side, keep the case from shifting while winding the clock.
Clock-makers provided stabilizers on many clocks so that they would not move during regular winding or remain stable in the event of vibration or shock (accidentally bumping into it).
The stabilizer is usually about an inch in length, has a knurled brass knob on one end and is mounted on a brass or steel plate which is then fixed to the back of the clock case by means of wood screws.
This is the right stabilizer on my Gustav Becker.
If you find two small holes on either side of the back and near the bottom of the case of a wall clock you can bet that you are missing the wall stabilizers. You can order them from any clock supply house.
They not only complete the look of a wall clock but are functional as well. A very simple solution to a potentially frustrating problem.
Antique and Vintage Clocks 
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