Also 7 staddow. [Of obscure origin.] (See quot. 1846.)
1688. R. Holme, Armoury, III. 383/2. Two Tools belonging to a Comb-maker, viz., the Turn-File, and the Staddow.
1846. Holtzapffel, Turning, II. 723. The comb-cutters double saw is called a stadda, and has two blades so contrived as to give, with great facility and exactness, the intervals between the teeth of combs.
1875. Knight, Dict. Mech.