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Everything about Datum reference

Point of reference against which some others are calculated

A datum reference or just datum is some geometrically important part of an object, such as a point, line, plane, hole, set of holes, or pair of surfaces. It serves as a reference in defining the geometry of the object and (often) in measuring aspects of the actual geometry to assess how closely they match with the nominal value, which may be an ideal, standard, average, or desired value. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Datum referenceA 5-minute orientation
  2. Skim a recent paper: Connecting the Brazilian Vertical System to the International Height Reference Frame by estimating the vertical datum parametersInfluential work since 2022
  3. Pick up a classic book: Cartesian meditationsThe most-reprinted book on the subject
  4. Read the landmark paper: A review of algebraic constraints in terrestrial reference frame datum definitionCited 102 times
  5. Go sideways: Geometric dimensioning and tolerancingA closely related topic
  6. Go sideways: Geometrical Product Specification and VerificationA closely related topic

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🗂️ The subject at a glance

  1. Uses
  2. Engineering

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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