Material
Glass  - selected float glass
Outbreaks on edges  -  <0.1mm
Disc proccessing  - with chamfers

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Pattern
On glass -  sputtered glass
Gradution line's width tolerance  -  max. 10%
Gradution accuracy  -  <2"(Ø200 mm), 15"(Ø20 mm)
Graduation coaxiality to outside diameter  -  < 0.2 mm (DIN7184)

  

Glass Plates
Glass plates are available in a variety of pattern configurations for variety of applications

Overall dimensions  -  up to 127x127 mm
Minimum size of element  -  10 μm
Pattern size  -  up to 100x100 mm
 

Variations to suit customer requirements
Other glass types, glass thicknesses and shapes of graduations lines can be provided.