flexibility for precise curves Strong, flexible ruler bends into arcs and contours without cracking or losing shape, so you can measure and draw complex curves accurately. Dualsided measurements for faster work Metric and imperial scales are printed on both sides, letting you read measurements from either face and switch units without flipping the ruler. Raised, transparent edge for ink ruling The raised transparent edge creates a clean gap for ink lines, improving line quality and protecting the drawn work. The edge is easy to wipe clean and sits well against drawing boards. Reliable fit and handling Designed to conform to surfaces and templates, the ruler holds its position for controlled tracing and repeatable measurements on paper, board, or fabric. Broad professional use Designed for arc measurement and contour lines used in drafting, engineering, construction, and garment design. Practical scenarios Pattern making and sewing: Trace smooth armholes, necklines, and hip curves when drafting garments or adjusting patterns. Technical drawing and architecture: Draw consistent contour lines and radii on plans and presentation drawings while keeping ink lines sharp. Construction and fabrication: Measure and transfer curved profiles for trim, moldings, or component shapes on site or in the workshop. What you gain Fewer interruptions: Read scales from either side and avoid constant flipping. Cleaner results: Raised transparent edge keeps ink off the ruler and delivers neater lines. Versatile use: Works with pencils, pens, and ink on drawing boards, paper, and fabric for a range of professional tasks. Key attributes Function: Flexible contour and arc measurement, ink ruling, dualunit reading Compatibility: Suited to drafting tools, drawing boards, pattern tables, and general workshop use Design: Strong, flexible body with raised transparent edge for precise ink ruling Performance: Durable bending capability, accurate scales on both sides, easy cleaning Use this ruler when you need reliable, repeatable curved measurements and clean ink lines across drafting, pattern work, or site marking.