Folding rule

A downy birch ten section folding rule from Sweden, with precise steel hinges and brass end-caps. Downy birch is fine grained and retains it's strength and flexibility even in thin sections, hence it's common use in high grade plywoods. Virtually unchanged since Karl-Hilmer Johansson Kollén constructed his first folding rule in 1883, these are now constructed and tested to exacting standards, with a deviation of no more than ±0.0007% over 2 metres.
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£10.00 (Ex Tax:£8.33)