Sealey Trammel Point Set 2pc TPS02Useful for scribing parallel lines, circles and arcs. Allows any size circle or arch to be made either with a steel rule or length of wood. Fast set up which allows for quick and accurate setting out and marking. Knurled screws width 3 8"(10mm) to 1 1 4"(32mm). Pencil holder in one piece to mark your work. Radius lengths as required with your own beam. SCRIBING TOOL Useful for scribing parallel lines, circles and arcs. DETAILED Knurled screws width 3