The Collaborative International Dictionary of English v.0.48:

Inchmeal \Inch"meal`\, adv.
   Little by little; gradually.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inchmeal \Inch"meal`\, n. [See Meal a part, and cf.
   Piecemeal.]
   A piece an inch long.
   [1913 Webster]

   By inchmeal, by small degrees; by inches. --Shak.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "inchmeal":
   bit by bit, by degrees, by inches, by inchmeal, by slow degrees,
   by snatches, degreewise, drop by drop, foot by foot, gradatim,
   grade by grade, gradually, in detail, in driblets, in installments,
   in lots, in small doses, in snatches, inch by inch,
   little by little, part by part, piece by piece, piecemeal, slowly,
   step by step