In this dialog box you can assign scales to the labels (e.g. leaders).
Depending from which position the dialog box is started, the settings apply to the active label object or as default setting for the new label objects.
Dialog box Annotative scales
db_ath_leader_scale
Labeling Lists the scales assigned to the label.
[<] Assigns the scale selected in the scale list to the label.
[>] Removes the scale selected in the scale list from the scale list.
Scales Lists all available scales.
Factor Skips to the scale with the entered factor in the scale list.