reversible mouth bit

Manège: A bit having a rule-joint. In one position it works the same as the Pelham, while if reversed it becomes a stiff-mouth bit. IMG:content-0577.png:[blocks in formation] revert the lead causes it to rise in ridges corresponding to the engraved lines, and to drive the thin plate before it, filling up the cuts in the face, and making a corresponding concavity in the back.