Linear Graduations

Standard version: incremental scale and reticle

Material

• Selected floatglass
• Coefficient of length-expansion: (α≈8.5×10^-6/K)
• Chippings: < 0.1 mm
• Glass thickness of the scale: 2 ±0.2 mm
• Max. length of glass: 3 300 mm
• Glass thickness of the reticle: 1 ±0.1 mm

Graduation

• Sputtered chrome on glass
• Accuracy of the scale: ≤ ±3 µm/ 1000 mm
• Max. length of graduation:  3 250 mm
• Accuracy of the reticle : ≤ ±1.5 µm
• Possible gratings:
  • 10 : 10 µm
  • 20 : 20 µm

Special versions

• Other glass types
• Other glass thicknesses
• Other coatings
• Sliding coat on reticle
• Other gratings