This professional compass is crafted from high carbon steel and designed for accurate math drawing, engineering drafting, leatherworking, and woodworking tasks. It features a lockable wing, stable rivet joint, and an attached pencil holder to support precise measurement and marking workflows. Features: High Carbon Steel Construction: Provides strength and durability suitable for repeated marking applications. Lockable Wing with Knurled Knob: Allows secure spacing adjustment to maintain consistent accuracy. Strong Rivet Joint Structure: Ensures stability during use and prevents unwanted movement. Attached Pencil Holder: Supports efficient marking; pencil not included. Versatile Application: Suitable for math drawing, engineering drafting, leatherworking, and woodworking. Specifications: Dimensions: 12in (30cm, 1–3cm variation allowed) Material: High Carbon Steel Colour: Silver Features: Lockable Wing, Rivet Joint, Pencil Holder Package Includes: 1 × Professional Compass (Carbon Steel Scribing Gauge) Note: Pencil not included. Allow a 1–3cm size error due to manual measurement. Slight colour variation may occur due to lighting or screen differences. Clean after use to prevent rust. Store in a dry place to maintain durability. Avoid dropping to protect rivet joint and lockable wing.