Oral Dental Appliance for Improving Breathing

An adjustment mechanism for an adjustable clip assembly, the clip assembly including an upper clip, a lower clip and a fastener for connecting the upper clip and the lower clip and for fastening the upper clip and the lower clip together, the adjustment mechanism comprising:

• a surface defining a recess for receiving one of the clips in a fixed position, with the other of the clips connected to said one of the clips;
• a dial on said surface, said dial bearing indicia indicative of the forward-rearward position of the other of the clips relative to said one of the clips;
• an indicator needle including a tip at one end aligned with said dial, a guide post at the opposite end, and a pivot post between said tip and said guide post, said pivot post pivotably mounted on said surface;
• and
• a generally planar tool adapted to be in slidable contact with said surface, said tool defining a housing for receiving said other of the clips for movement with said tool, and defining an elongated slot for slidably receiving said guide post,
• whereby movement of said tool in a forward-rearward direction;
• moves said other of the clips relative to said one of the clips received in said recess;
• and
• moves said guide post within said elongated slot such that the movement of said guide post causes rotation of said indicator needle about said pivot post so that said tip moves relative to said dial to an indicia indicative of the forward-rearward position of the other of the clips relative to said one of the clips.