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Optical Metrology Instruments

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Optical Parallel

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Optical Parallel

Optical Parallels are used for checking Flatness and Parallelism of Micrometer measuring faces. These are supplied as a set of four numbers with thickness increment of 0.125 mm (one fourth of the pitch of the Micrometer). Optical Parallels are made from Fused Silica/Fused Quartz material as the material has environmental durability, and a low coefficient of thermal / Linear expansion and as well resistant to abrasion.

Optical ParallelThe parallels are manufactured to comply with the NPL (National Physical Laboratory) specification MOY/SCMI/54
  • Material : Fused Quartz
  • Accompanied by Flatness Inspection Report
  • Inspection in Laser Fizeau Interferometer
  • Reference Flat (»/20) traceable to NIST.
  • Evaluation of Flatness with Licensed Quick Fringe Software
  • Cosmetic Defects : According to US MIL Std
  • Supplied in Wooden Box

  • Diameter : 30 mm +/- 0.15 mm
  • Flatness : 0.1 microns
  • Parallelism : 0.2 microns
  • Thickness Tolerance : +/- 0.01 mm.

Part No Thickness (mm)
OP-01 12.00, 12.12, 12.25, 12.37
OP-02 25.00, 25.12, 25.25, 25.37

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