[D-1-10] Uncertainty evaluation of form error measurement of probe tip ball using a rotating reference sphere 〇So Ito1, Daichi Kato1, Daisuke Tsutsumi1, Kazuhide Kamiya1, Kimihisa Matsumoto1 (1.Toyama Prefectural University) Keywords:Measurement、probing system、calibration、form error、rotating reference sphere