@misc{260456, author = {James Yen and Dennis Leber and Leticia Pibida}, title = {Comparing Instruments}, year = {2020}, month = {2020-09-30}, publisher = {Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.TN.2106}, language = {en}, }