TY - GEN AU - Reeve, Charles P C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1975-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.75-975 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1975 TI - The calibration of an optical flat by interferometric comparison to a master optical flat: ER -