This scaler was created to be used with most recent Sinderella avatars(regular size only). It extends the legs so that the feet will touch the floor when wearing flat shoes (or any shoe meshes which don't have a lot of height). Please note that the feet might go through the floor when used with any other avatars and/or high platform shoes (the scaler doesn't lift the avatar above floor level). Choose the % which works best with the shoes you're wearing:

5% - 6% - 7% - 8% - 9% - 10%