Precise Car Compass Telescopic Rod Drawing Compass STAEDTLER 551 01 with steel construction and maximum circular diameter of about 265mm for technical drawing, drafting, and professional cartography work in a compact 180mm by 77mm packaging
STAEDTLER 551 01 Precision Car Compass: German Steel Drafting Tool for 265mm Circles

The STAEDTLER 551 01 precision car compass is a technical drafting instrument designed for creating accurate circles up to approximately 265mm in diameter. Manufactured by the German brand STAEDTLER, this compass utilises a steel construction and a telescopic rod mechanism, providing the stability and adjustability needed for professional drawing, architectural planning, and cartographic work. Its compact packaging, measuring 180mm by 77mm, ensures the tool is protected and portable, ready for use in studio, classroom, or office environments where reliable drafting equipment is required.
Features and Construction

This compass combines a specific mechanical design with robust materials to fulfil its function as a precision drawing tool.
Material and Build
The compass is constructed from steel, a material chosen for its strength and ability to hold a precise form. This rigidity is crucial for a drafting compass, as it prevents flex during use, ensuring the drawn circle maintains its intended radius and the needle point remains securely anchored. The steel construction contributes to the tool's longevity under normal drafting conditions.
Size and Practical Fit
The key operational specification is its maximum circular drawing capacity of about 265mm. This size covers a common range of circles needed for technical drawings, diagrams, and plans. When stored or transported, the compass is housed in packaging measuring 180mm in length and 77mm in width, a compact form factor that makes it easy to organise within a drafting toolkit or bag.
Uses and Placement

The design and specifications of the STAEDTLER 551 01 make it suitable for specific professional and educational applications.
Event or Professional Use
In professional settings such as architecture, engineering, and cartography offices, this compass is used for producing technical drawings, site plans, and detailed maps where accurate scale and geometry are non-negotiable. The 265mm drawing capacity allows for the creation of sizable circles and arcs within technical schematics and design layouts.
Everyday Home Use
For advanced hobbyists, students in technical disciplines, or home workshop projects requiring precise geometry, this compass offers a reliable tool beyond basic stationery. It can be used for model-making plans, detailed artwork, or educational demonstrations where a standard school compass is insufficient for larger or more precise work.
Benefits and Buying Value

The value of this product lies in its focused design for a specific technical task, backed by the materials and brand reputation.
Reuse and Low Maintenance
The steel build is inherently resilient for a drawing tool, meaning with careful handling and storage in its provided packaging, the compass can be used repeatedly over time without degradation of its core drawing function. No complex maintenance is required beyond keeping the mechanism clean and free from debris.
Why Choose This Product
Choosing the STAEDTLER 551 01 provides a dedicated precision instrument from a recognised German brand specialising in drafting supplies. It addresses the need for a tool that can reliably produce circles up to 265mm with consistency, a requirement for which a general-purpose compass may not be adequate. The product offers a straightforward solution centred on this specific capability.
