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The Mitutoyo 157-105 has a range of 25-50mm and the parallels are 25mm thick.
Designed to inspect parallelism and flatness of measuring faces of micromters.
Each set consists fo 4 thickness.
Supplied in fitted wooden case.
The Mitutoyo 157-101 has a range of 25-50mm and the parallels are 25mm thick.
Flatness: 0.1Ìm / .000004"
Parallelism: 0.2Ìm / .000008"
Diameter: 30mm / 1.18"
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 1Ìm (0.32Ìm x 3 = 0.96Ìm).
Fringe on the anvil side must not be more than one.