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Manufactured using BK-7 grade of optical glass or fused quartz of 0.06 or 0.13 micron, our range of optical flats is used for inspection of gauge blocks, mechanical seals, pump valves, auto parts, prisms, filters, mirrors and windows. The diameters of the raw material range from 25mm to 100mm. These optical flats are used to measure the flatness of unknown surfaces as a reference by means of property of interference.Material:BK7 and other optical lens
Diameter :25mm
Thickness:15~25mm
Flatness:?/10
Surface quality:60—40scratch and dig
Parallelism Tolerance:larc sec
