Precision adjustment and fast locking: Slide the ruler of the compass for woodworking to the desired position and lock it quickly with brass screws. This provides accurate scale adjustment and repeatable results for layouts and scribing. Secure attachment for parallel lines: Thumb screws are built for easy hand tightening, allowing a firm connection to the ruler or straight edge so you can draw precise, consistent parallel lines with minimal setup time. Durable, rust‑proof construction: Made from superior aluminum alloy with brass hardware, the tool resists corrosion and holds its shape under regular shop use. The robust build delivers reliable performance for carpenters and woodworkers who demand long-term accuracy. Compact, lightweight positioning blocks: Small, portable blocks make the compass easy to carry, store, and use on the go. Their low weight and compact size keep your toolset streamlined without sacrificing measurement accuracy. What it does best: accurate scaling, fast adjustments, solid locking, and precise parallel marking. Designed to improve layout speed and consistency while reducing rework. Key attributes Function: Sliding ruler compass for woodworking; scale adjustment, locking, and parallel marking. Hardware: Brass screws for fine adjustment and locking; thumb screws for user-friendly attachment. Material: Superior aluminum alloy body, rust-proof for durability. Portability: Compact and lightweight positioning blocks for easy transport and storage. Performance: Quick setup, repeatable accuracy, and durable construction for frequent use. Practical applications Cabinet and furniture layout: Quickly scribe and transfer accurate parallel lines for joinery, panel cuts, and hardware placement. On-site marking and repairs: Compact positioning blocks and quick-locking screws make field measurements and repetitive marking efficient and reliable. Template and pattern work: Use the sliding ruler and secure attachment to reproduce consistent offsets and parallel lines for trimming and routing tasks. Why this tool helps Saves time by combining fast sliding adjustment with secure locking. Improves consistency across repeated marks and cuts, reducing material waste. Built to last in workshop and field environments, maintaining accuracy over time. Includes the sliding ruler compass components with brass screws and thumb screws, plus compact positioning blocks for convenient storage and transport.