Oxford Granite

Precision granite products are manufactured to the highest quality standards to provide an accurate surface from which final measurements can be taken. More dimensionally stable than steel or cast iron, with a low thermal expansion co-efficient. Does not burr, is corrosion free and easy to maintain.

Straight Edges

Used for checking surfaces for straightness, drawing and scribing straight lines. Manufactured to BS5204 : Part 2 : Grade A. Supplied with calibration certificate.

牛津花岗岩
花岗石精密产品制造的质量标准，以提供准确的测量表面从中可以采取的后。更多尺寸稳定比钢或铸铁，具有低的热膨胀的合作效率。不毛刺，是无腐蚀，易于维护。

直边
用于检查表面的直线度，绘画和划线直线。制造的BS5204：与A级提供的校准证书：第2部分。