pica big dry is a pencil for carpenters which is characterised by the high-tech mechanism for its push button lead advance. This makes it easy to use, even on rough surfaces such as wood, stone or masonry. The robust rectangular-shaped leads, which are 2 × 5 mm thick and 150 mm long, allow for precise edge guide when marking out objects and enable long markings in one go. The leads are easy to replace and optimally protected against dust and moisture in the practical quiver box with a special clip cap.