- It is the most frequently used bracket positioning aid.
- It is made of stainless steel
- It accurately measures height of bracket placement from the incisal edge at 3.5, 4, 4.5 and 5mm.
- Flat surface rests on incisal/occlusal surface of tooth.
- Simplifies seating the bracket on the teeth with exactly the right distance between bracket slot and incisal edge with pencil lid or metal tips.