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Mitutoyo Optical Parallels, Series 157

₱22,700.00
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 Precision is our Profession

Mitutoyo Optical Parallels, Series 157

  • Designed to inspect parallelism and flatness of measuring faces of micrometers.
  • Each set consists of 4 thicknesses.
  • Supplied in fitted wooden case.

Technical Data

Flatness: .000004” / 0.1μm
Parallelism: .000008” / 0.2μm
Diameter: 1.18” / 30mm

Parallelism check between measuring faces by means of interference fringe produced by an optical parallel.
The parallelism between the measuring faces can be determined as follows--place the optical parallel to the anvil and observe the number of interference fringes produced on the spindle side under the measuring force of the
micrometers. The parallelism is about 1μm (0.32μm x 3 = 0.96μm).
Fringe on the anvil side must not be more than one.

Optical Parallels, Series 157
Code Model Micrometers to be checked Thickness of Parallel Price
Metric
157-903 (4pcs/set) OP-25 0-25mm 12, 12.25, 12.37mm 22,700.00
157-904 (4pcs/set) OP-50 25-50mm 25, 25.12, 25.25, 25.37mm 59,200.00
Inches
157-901 (4pcs/set) OP-1 0-1" 0.5", 0.5062", 0.5125", 0.5178" 24,800.00