30-hour tall clock by A. (Ansell), Merrell, ca. 1827

30-hour tall clock by Alvah Hart & Robinson, Truesdale, ca. 1831

Dial by A. Hart, Brookfield, ca. 1829

30-hour tall clock movement and dial, Phineas Demming, Vienna, ca. 1829

30-hour wooden works by Allison Turner, Ashtabula, ca. 1839

Hart & Truesdale patent clock

William Hartson, Hartford, ca. 1833

Selah Whiting, Wayne, ca. 1832

Neon clock made by Neon Products in the 1940s for "Key Work Clothes"