Construction
True Position Calculator
Find the true position deviation diameter.
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True position measures the diameter of the error circle from a target location.
The math behind it
TP = 2 × √(X deviation² + Y deviation²). The result is a diameter — compare it with the tolerance on the print.
Worked Example
x 0.1, y 0.15 → TP 0.36 mm dia.
Frequently Asked Questions
In tolerance?
Passes if the true position is ≤ the tolerance diameter.
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