Battens

Chambers's Encyclopaedia, Volume 1: A to Beaufort, p. 797–798

Battens, sawn fir timber, of smaller dimensions than the kind called planks. They are usually from 12 to 14 feet long, 7 inches broad, and 2½ inches thick. Cut into two boards, each 1¼ inch thick, they are used for flooring; cut into three boards, they are put on roofs below slates; in narrower pieces, they are put upright on walls for fixing the laths for plastering. The best battens are brought from Norway, and sold wholesale by wood-merchants.

Source scan(s): p. 0824, p. 0825