Woodworking Compass Scribe Key benefits Precise, fast scale setting: Brass screws let you slide the rule into the desired position and lock it quickly and securely for accurate measurements and repeatable markings. Improved efficiency and consistent parallel marking: Knurled locking screws enable quick fixation so you can mark parallel lines with stable accuracy and maintain alignment across multiple pieces. Durable, corrosion-resistant construction: Made from a high-quality aluminum alloy with a rust-resistant body for long service life and reliable performance on the job. Compact and portable: Lightweight positioning blocks make the tool easy to carry, store and use on-site or outdoors without adding bulk to your kit. What it does and why you need it Provides a simple, repeatable way to mark precise distances and parallel lines on wood, saving time compared with measuring and re-checking by hand. Locks the scale firmly in place to prevent movement during marking, reducing layout errors and rework. Built to withstand shop and field use so you get consistent results over many projects. Function and compatibility Works by sliding a ruler into the compass scribe body and fixing it with brass screws for accurate scale positioning. Knurled screws allow fast adjustment and secure clamping for parallel scribing operations. Constructed from an aluminum alloy with a rust-resistant finish; compact positioning blocks for portability. Typical applications Cabinet and furniture layout: mark perfectly parallel edge lines for rabbets, grooves and joinery. On-site carpentry and trim: quickly transfer repeated dimensions across boards or panels at the job site. Detailed joinery and pattern work: set and lock precise offsets for dovetails, mortise-and-tenon or inlay preparation. Materials: aluminum alloy body, brass screws, rust-resistant finish. Functions: adjustable scale positioning, quick locking, parallel scribing, portable positioning blocks.