Webster's Revised Unabridged Dictionary · 1913

Scaleboard

Scaleboard (?; commonly {not transcribed}) , noun

[3d scale + board.]

1.
(Printing) A thin slip of wood used to justify a page. [Obsolete] — Crabb
2.
A thin veneer of leaf of wood used for covering the surface of articles of furniture, and the like.
Collocations (1)
Scaleboard plane , a plane for cutting from a board a wide shaving forming a scaleboard.