These General Tools 523 Adjustable Trammels are highly flexible and can be replaced with pens and pencils. They have a clamp opening that can fit beams between 1.6cm and 2.5cm - 1.3cm . These marking scribes will help you make precise cuts. They are ideal for scoring over large distances. This set comes with two trammels, as well as two 15cm scriber points.
General Tools 523 Adjustable Trammels: