The Collaborative International Dictionary of English v.0.48:

Scale \Scale\, v. t. [imp. & p. p. Scaled; p. pr. & vb. n.
   Scaling.]
   To weigh or measure according to a scale; to measure; also,
   to grade or vary according to a scale or system.
   [1913 Webster]

         Scaling his present bearing with his past. --Shak.
   [1913 Webster]

   To scale a debt, wages, etc. or To scale down a debt,
   wages, etc., to reduce a debt, etc., according to a fixed
      ratio or scale. [U.S.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scaling \Scal"ing\ (sk[=a]l"[i^]ng), a.
   1. Adapted for removing scales, as from a fish; as, a scaling
      knife; adapted for removing scale, as from the interior of
      a steam boiler; as, a scaling hammer, bar, etc.
      [1913 Webster]

   2. Serving as an aid in clambering; as, a scaling ladder,
      used in assaulting a fortified place.
      [1913 Webster]

WordNet (r) 3.0 (2006):

scaling
    n 1: the act of arranging in a graduated series [syn: scaling,
         grading]
    2: act of measuring or arranging or adjusting according to a
       scale
    3: ascent by or as if by a ladder

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "scaling":
   air attack, air raid, air strike, boarding, breakup, crack-up,
   diffusion, disintegration, dispersal, disruption, dissolution,
   escalade, exfoliation, fire raid, foray, fragmentation, incursion,
   inroad, invasion, irruption, raid, razzia, revolution,
   saturation raid, scattering, shattering, shuttle raid