Used for marking out lines parallel to a true edge or groove, and also to mark the centre of round bars. Machined base, two pillars and specifically designed to hold 2 scribers with 5/32"and 7/32" diameter. The base has a machined V-groove for use on pipes and round bar and two frictionally held pins which are used as a guide when sliding along the true edge or groove. The angle of the pillar can be finely adjusted with the use of a knurled thumb screw. Supplied with two pillars. Base dimensions: 80 x 30mm.