Scale ruler Staedtler Mars 561 98-1BK

The Staedtler Mars 561 98-1BK scale ruler is a compact plastic reduction ruler featuring six common architectural scales: 1:20, 1:25, 1:50, 1:75, 1:100 and 1:125. It is manufactured in Germany and combines a durable construction with a clear, multicolored finish to help distinguish scales during use.

Advantages

The ruler is lightweight and easy to handle, providing precise, pre-printed scale graduations for quick measurement and drawing of scaled plans. Its plastic material ensures resistance to everyday wear while keeping the tool affordable and portable. Color accents aid rapid identification of the required scale.

Suitable for

• Students studying architecture, engineering or design
• Architects and building professionals for conceptual sketches and quick checks
• Hobby model makers and DIY enthusiasts working with scaled plans
• Drafting tasks where compact, multi-scale tools are preferred

Key specifications

• Brand: Staedtler
• Model / MPN: 561 98-1BK
• EAN: 4007817148075
• Material: plastic
• Scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125
• Country of origin: Germany
• Pack contents: 1 reduction scale ruler (blister card)

How to use

Select the desired scale printed on the ruler and align the zero mark with the starting point of the element to be measured or drawn. Read off distances directly from the corresponding graduations to transfer measurements to paper or to measure existing drawings. Use the ruler edge for drawing straight lines and switch scales as needed for different plan proportions. Store the ruler flat or in a pencil case when not in use to prevent warping.

Recommendations

For best results, use a sharp mechanical pencil or fine technical pen and a firm, flat drawing surface. Clean the ruler periodically with a soft cloth to keep scale markings legible. Avoid exposing the plastic ruler to high heat to prevent deformation.