checkwork

noun3

1. •
   Work that is done in order to check (inspect or verify) something.

   • Checkwork done at the Mellon Institute has shown the specifications to be fair and reasonable. — 1918
2. •
   A pattern of alternate squares like those of a checkerboard.

   • It should be mentioned that "checkwork" is also employed to decorate the heads of several figurines from Western Europe (Brassempouy, Menton). — 1988
3. •
   The mechanism on a reel that halts it when it is unwinding.

   • The deluxe reel with every refinement including adjustable check, quick-release drum, dual checkwork, etc. — 1964