Characters for ceramic pin gauge:
　good wear resistance, long working life.Working life is many times than metal pin gauges.
　Good anti-corrosion performance and never rusty, so you can use them by your hand directly, needn't any special protect treatment.
　CTE ( coefficient of thermal expansion ) smaller than steel, can be directly used for steel parts inspection.
White surface, laser lettering is easy to read.
Quality character: roughness ≤ Ra0.20mm density ≥6.0g/cm3 , hardness ≥HRc58, cofficient of friction is 0.1

Product precision: ± 0.001 mm, ± 0.002 mm, ±0.0005mm.
Diameter: 1mm~30mm ( interval is 0.01mm, also can manufactured as request )
Length: 30mm, 40mm, 50mm or special required by customers