The Collaborative International Dictionary of English v.0.48:

Scantness \Scant"ness\, n.
   The quality or condition of being scant; narrowness;
   smallness; insufficiency; scantiness. "Scantness of outward
   things." --Barrow.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scantness
    n 1: the quality of being meager; "an exiguity of cloth that
         would only allow of miniature capes"-George Eliot [syn:
         meagerness, meagreness, leanness, poorness,
         scantiness, scantness, exiguity]