TY - RPRT TI - The estimation of measurement uncertainty of small circular features measured by CMMs AU - Phillips, S D AU - Borchardt, B AU - Estler, W T PY - 1995 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 5698 DO - 10.6028/NIST.IR.5698 ER -