The Saker Multifunctional Marking Tool is more than just a pencil. This tool can mark on almost any surface and in any situation. The tool is made of anodized aluminum alloy. It is lightweight, yet strong and durable. No rusting, no breakage. It has a clear scale on it, so you can draw parallel lines and arcs with precision. It can be locked after each adjustment to ensure maximum accuracy. This tool has more than 15 uses. Tile laying, drywall installation, panel work, furniture making - it can handle all of these and more.