
The following is a study of the Army regulations concerning miniature medals. In general if there are not specific regulations concerning miniature medals, we assume that they follow the full size medals.
The maximum width is four medals wide with no overlap.
The maximum length of holding bars for miniature medals is 2 3⁄4 inches.
You have your choice of overlapping or not.
Miniature medals are worn side by side when four or less are worn in the same row, and they may be overlapped. If the medals are overlapped, the overlap will not exceed 50 percent and will be equal for all medals.
Note:
Concerning the rack builder, if you choose the overlapping option the medals will be permanently assembled. Rather if you choose no overlapping you will be able to slide the medals off the mount in order to update.

There are not many regulations pertaining to miniature devices, so if nothing is mentioned referring to the ribbons and full sized medals regulation is suggested.
Miniature oak leaves are not authorized for wear.
Oak leaf clusters, 5/16 inch in length, are worn on service ribbons, the suspension ribbon of miniature medals, and unit awards.

Only three oak leaves per row.
If four oak leaf clusters are worn on the suspension ribbon on either full-size or miniature medals, the fourth one is placed above the middle one in the row of three.

Note:
The previous are the only device regulations that specifically reference miniature medals for the rest of the regulations please see the Army Ribbon Regulations or Army Medal Regulations.
As for the rack builder we interpret the regulations concerning miniature medals as follows:
Note:
These interpretations are based on physical spacing on the miniature medals.