Flipping Book- BTP

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Errors summed in quadratic
 Eg treatment with 2 systematic errors
 Error A: 2mm
 Error B: 1mm
 Sum of squares: 2²+1²= √5=2.23mm
 Margin = 2.5*2.23mm= 5.6mm
 Two scenarios
 Elimination of error A
 Elimination of error B