TY - GEN AU - William Estler C2 - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD DA - 1998-03-01 LA - en M1 - 103 No. 2 PB - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD PY - 1998 TI - Uncertainty Analysis for Angle Calibrations Using Circle Closure ER -