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 __   __    _____     ______    ______    ______  
 \ \\/ //  |  ___||  /_____//  /_   _//  /_   _// 
  \   //   | ||__    `____ `    -| ||-     | ||   
  / . \\   | ||__    /___//     _| ||_    _| ||   
 /_//\_\\  |_____||  `__ `     /_____//  /__//    
 `-`  --`  `-----`   /_//      `-----`   `--`     
                     `-`

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Text this: White light colour fringe analysis for surface profiling