Compas à balustre Rotring S0676580 Noir Acier inoxydable

The Rotring S0676580 bow compass in black stainless steel combines precise mechanics with a compact form. Designed for technical drawing and drafting, the compass offers a maximum circle diameter of 36 cm and an overall length of 170 mm. Weighing 141 g, it balances stability for accurate strokes with lightness for comfortable extended use. The finish and materials provide a durable instrument suitable for classroom, studio or office environments.

Advantages

The bow compass features a rigid stainless steel construction and a fine adjustment mechanism that enables controlled, repeatable circles. Its black-coated components reduce glare while improving visual contrast against paper. The moderate weight and ergonomic length make it easy to position and rotate, and the design supports interchangeable leads or accessories for varied drawing needs.

Suitable for

• Technical drawing and drafting
• Mathematics and geometry exercises
• Architectural and engineering sketches
• Classroom use for students and teachers
• Precision hobby work and model making

Key specifications

• Maximum circle diameter: 36 cm
• Total length: 170 mm
• Weight: 141 g
• Material: stainless steel with black finish
• Type: bow compass with fine adjustment

How to use

Secure the point of the compass at the intended center of the circle and set the pencil or lead in the holder, ensuring it is firmly clamped. Adjust the span using the sliding arms and the fine adjustment mechanism to reach the desired radius, then rotate the compass smoothly around the fixed point to draw the circle. For repeatable dimensions, use the fine adjustment for incremental changes and check alignment on the drawing surface before making the final stroke.

Recommendations

Regularly check and tighten the clamping screws and the lead holder to maintain accuracy. Use a properly sharpened technical lead or drafting pencil sized for the holder, and store the compass in a protective case to prevent damage to the point and tip when not in use.