Acrylic 300mm Chart Drawing Triangle Ruler Hand-drawn Triangle Board Nautical Navigation Triangle Drafting Marine Accessories Crafted from acrylic, this chart drawing triangle ruler offers performance for navigation and technical drawing tasks.The material provides clarity and resilience, supporting consistent use over time.Designed for , the ruler features engraved scales that allow accurate measurement and distance marking.Its triangular shape and transparent construction enable clear visibility of charts and drawings, obstruction during use.The lightweight design supports single-handed , making it convenient for quick adjustments and efficient drafting.Suitable for marine applications, it aids in nautical navigation by facilitating precise plotting on charts.This tool is ideal for use on boats, yachts, and ships where dependable measuring instruments are required.