PART B: A gauge block is checked by using an optical flat associated with a monochromatic light λ=180nm and master gauge blocks as shown in the following figure. Given that the width of all gauges is 40 mm If the optical flat is located only over A-B, and 30 bands was appeared find X. Top view (optical flat) A Optical fist X Mater awit Surface plate B Wekto te shocked C
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