Birch slats just 2.5 mm thick give this 2 m folding wooden ruler high springiness during opening and closing. Metal hinges with tight tolerances and steel springs hold each joint in its locked position. The cm/mm scale is printed on both faces and both edges. Large digits and red tens markings speed up reading in poor light.
The 2m folding wooden ruler STABILA Type 507 N measures lengths, marks out workpieces and checks dimensions on site. Its body is made of curly birch, with slats only 2.5 mm thick. That thin section gives the rule noticeable springiness when it is opened and folded. Metal hinges with tight tolerances work together with steel springs, so each joint locks in position and moves smoothly.
A weather-resistant coating protects the wood and the printed graduations against rain and wind. Both ends are sealed in red to limit moisture ingress into the timber. The cm/mm scale is printed on both faces and along both edges of the rule. Large digits and red tens figures help the reader find a value quickly. The rule meets the European Measuring Instruments Directive, carries the CE mark and the metrology mark, and comes with an EC Type Examination Certificate in accuracy class III.
Curly birch gives better elasticity than thicker conventional slats. The slim sections bend slightly instead of breaking during fast handling. Hinges and steel springs determine how long a folding rule stays usable after repeated opening cycles. On this model, the joint assembly is machined to keep a stable locked position over time. Folded down, the rule stays flat enough for a tool bag.
When fully extended, the joints hold the rule straight for longer distances. The coating adheres firmly to the wood and resists flaking when the rule rubs against building materials. Graduations sit under the coating, so they stay legible during frequent use. The slim build keeps the folded rule compact in a work trouser pocket throughout a shift.
Graduations are printed in black on a light background with a clear layout. Red tens figures allow fast orientation during continuous measuring. Large numerals support reading in basements, lofts and other poorly lit areas. Because the cm/mm scale runs along both edges and both faces, the user does not need to turn the rule over to read a value from the nearest edge.
Double-sided printing shortens the work sequence when marking out on boards. The tradesperson places the rule once, then reads directly from the closest edge. This reduces transfer errors when carrying a dimension onto the material. With accuracy class III, the rule serves common length measurements in joinery and building work.
The 2 m folding rule suits carpenters, bricklayers, interior fitters and DIY users. Typical tasks include measuring timber blanks, marking out before cutting and checking door frame dimensions. It also measures installation gaps, verifies step heights and takes quick readings on walls. The folding format means the rule travels in a work trouser pocket during the whole shift, ready for repeated checks.
Type 507 N fits users who want a slim, light wooden rule with good elasticity. The 2.5 mm slats and steel spring joints handle a continuous measuring rhythm on site. The weather-resistant coating and sealed ends keep the rule working in damp conditions.









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