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NIST SP 376, Metric Ruler is an educational tool designed to teach the International System of Units (SI) length measurements. The design includes approximate scales of 300 mm and 30 cm. One edge is graduated in centimeters by alternating solid markings in the style of a forensic photo scale. One edge is divided into 1 dm, 10 cm, and 100 mm sections.
Benham, E.
and Dill, K.
(2024),
NIST Special Publication 376, Metric Ruler, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.376-2024, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958453
(Accessed October 9, 2025)