Accurate and fast scribing with 0.5 mm accuracy (up to 0.25 mm for T-rules) made easy. Pointed pencils or 0.5 mm mechanical pencils are guided without play in the marking holes with ½ or ¼ mm graduation. For maximum reading accuracy, the stainless steel rule has a matt, non-reflective surface and sharply lasered numbers and scales. The fence is made of solid aluminium, the knurled screws are made of stainless steel.