A flexible curve: the modern counterpart of a lesbian rule

A Lesbian rule was historically a flexible mason's rule made of lead that could be bent to the curves of a molding, and used to measure or reproduce irregular curves.[1][2][3] Lesbian rules were originally constructed of a pliable kind of lead found on the island of Lesbos.[citation needed] It is from the island that the ruler gets its name.

Figurative allusions

The rule is alluded to by Aristotle in his Nicomachean Ethics (book V, chapter 14) as a metaphor for the importance of flexibility in equitable justice:

See also

  • Flat spline – Long flexible batten used to produce a fair curve through a set of points
  • French curve – Template made from metal, wood or plastic composed of segments of smooth curves
  • Profile gauge – Tool for recording the cross-sectional shape of a surface

References

  1. 1 2 "lesbian rule". Oxford English Dictionary (online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  2. Loughlin, Gerard (2007). Queer Theology: Rethinking the Western Body. Blackwell. ISBN 9780470766262.
  3. Magee, Maggie; Miller, Diana C. (1997). Lesbian Lives: Psyschoanalytic Narratives Old and New. Routledge. p. 36.
  4. Aristotle (1934). "Nicomachean Ethics, Book 5 Chapter 10". Translated by Rackham, H.
  5. Thomas More to Martin Dorp, in Kinney, Daniel, ed. (1986). The Complete Works of Sir Thomas More. Vol. 15. New Haven: Yale University Press. p. 43. ISBN 978-0-300-03161-4.
  6. Daniel, Samuel (1603). "To Sir Tho: Egerton Knight". A Panegyrike Congratulatorie delivered to the Kings Most Excellent Maiestie at Burleigh Harrington in Rutlandshire ... Also certaine epistles. London. p. C3v. (subscription required)
  7. Vine, Angus (2010). In Defiance of Time: antiquarian writing in early modern England. Oxford: Oxford University Press. p. 124. ISBN 978-0-19-956619-8.
  8. Vico, Giambattista (1990). On the Study of Methods of Our Time. Cornell: Cornell University Press. p. 34. ISBN 978-0801497780.