Folding ruler STABILA Series 400 — wooden, metric, 2 m, 17 mm width, 3.3 mm joint strength

STABILA Series 400 folding ruler is a wooden, metric measuring tool with a total length of 2 m when extended and a compact folded design for transport and storage. The ruler has a 17 mm wide profile and a 3.3 mm joint strength that provides reliable folding and straightening. A white finish improves the visibility of the black cm/mm scale and large, clearly printed digits; red tens help with quick orientation. The product is intended for carpentry, joinery and general measuring tasks where a durable, portable metric ruler is required.

Advantages

The ruler is made from specially selected European beech that combines break resistance and elasticity, while hard-wearing, weather-resistant paint protects the wooden sections and the printed scale. Embedded, hardened sheet steel joints with an integrated steel spring give smooth folding, exact locking and long-term durability. Dual-sided cm/mm graduations, large digits and red tens support fast and accurate reading. The instrument meets relevant metrology requirements and carries CE and type examination certification for accuracy class III.

Suitable for

• Carpentry and woodworking measurement tasks
• Joinery and furniture making
• On-site measuring where a compact, portable metric ruler is needed
• General DIY and renovation projects requiring precise linear measurement

Key specifications

• Material: high-quality European beech wood with protective paint finish
• Length (extended): 2 m
• Profile width: 17 mm
• Joint strength: 3.3 mm
• Scale: cm/mm on both sides and both edges
• Digits: large printed numerals with red tens for quick orientation
• Joints: embedded hardened sheet steel with integrated steel spring
• Finish: white paint for improved scale visibility; weather-resistant
• Accuracy: class III; compliant with European metrology directives and CE marked

How to use

Open the STABILA Series 400 folding ruler by unfolding the wooden sections until the joints click into the locked position to form a straight 2 m measuring edge. Place the ruler along the object or surface to be measured, align the zero mark with the starting point and read the measurement from the nearest scale in cm/mm. For measuring around corners or inside recesses, fold and reposition the ruler as needed; when folding back, ensure joints are aligned to avoid pinching. Store the ruler folded to protect the scale and joints from damage.

Usage recommendations

For accurate and long-lasting performance, avoid prolonged exposure to moisture and extreme temperatures. Clean the scale gently with a soft, dry cloth; do not use abrasive cleaners or solvents. Regularly check the joints for smooth movement and secure locking; if dirt accumulates in the hinges, remove debris carefully to maintain functionality.