@misc{1173111,
  author = {Lewis V Judson},
  title = {Calibration of line standards of length and measuring tapes at the National Bureau of Standards:},
  year = {1960},
  month = {1960-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.MONO.15},
  language = {en},
}