TY - GEN AU - Turgel, R S AU - Mulrow, J M AU - Vecchia, D F C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1988-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.250-26 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1988 TI - NBS phase angle calibration services: ER -