Granite straight edge is used to test the straightness, flatness of the work piece. It is suitable for the precision working, for instance, guide rail, equipment installation, machine tool working platform, etc.
This precision straight edge applies the Jinan black granite which features fine structure, uniform texture, good stability, as well as high strength and hardness. It is really an ideal basal plane for the inspection of precision tools and mechanical parts, especially when it comes to the high precise measurement.
Unlike the type made of steel or cast iron, this granite measuring instrument has a better stability. It still remains unchanged with the original precision, after having been put aside for one year.Parameters
|Size (mm)||Straightness or Flatness of the Working Surface||Depth of Parallelism Between the Working Surfaces|
|500 × 100 × 40||1.6||2.6||2.4||3.9|
|750 × 100 × 40||2.1||3.5||3.2||5.3|
|1000 × 120 × 40||3.0||5.0||4.5||7.5|
|1500 × 150 × 60||4.4||7.4||6.6||11.1|
|2000 × 200 × 80||5.4||10.0||8.1||13.5|
|3000 × 200 × 80||8||16||12||24|
Precision Measurement Tool | Granite Slab Wholesale | Flatness Inspection Tool