# Repeatability and reproducibility summary
# Scope: Three repeated measurements; unbiased sample standard deviation.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

a = 10 mm
b = 10.02 mm
c = 9.99 mm

mean := (a+b+c)/3 [mm]
sigma := sqrt(((a-mean)^2+(b-mean)^2+(c-mean)^2)/2) [mm]

check repeatability budget: sigma <= 0.03 mm

scenario alternative: a = 8 mm