The Collaborative International Dictionary of English v.0.48:

Size \Size\, n. [Abbrev. from assize. See Assize, and cf.
   Size glue.]
   1. A settled quantity or allowance. See Assize. [Obs.] "To
      scant my sizes." --Shak.
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   2. (Univ. of Cambridge, Eng.) An allowance of food and drink
      from the buttery, aside from the regular dinner at
      commons; -- corresponding to battel at Oxford.
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   3. Extent of superficies or volume; bulk; bigness; magnitude;
      as, the size of a tree or of a mast; the size of a ship or
      of a rock.
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   4. Figurative bulk; condition as to rank, ability, character,
      etc.; as, the office demands a man of larger size.
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            Men of a less size and quality.       --L'Estrange.
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            The middling or lower size of people. --Swift.
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   5. A conventional relative measure of dimension, as for
      shoes, gloves, and other articles made up for sale.
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   6. An instrument consisting of a number of perforated gauges
      fastened together at one end by a rivet, -- used for
      ascertaining the size of pearls. --Knight.
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   Size roll, a small piese of parchment added to a roll.

   Size stick, a measuring stick used by shoemakers for
      ascertaining the size of the foot.
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   Syn: Dimension; bigness; largeness; greatness; magnitude.
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WordNet (r) 3.0 (2006):

size stick
    n 1: a mechanical measuring stick used by shoe fitters to
         measure the length and width of your foot