The base section has canted corners, carried all the way through into the form of the feet. Color is a deep and rich brown, with a fine old patina. The center of the dial is profusely engraved and silvered, with the calendar in a square aperture at the bottom. The blued steel hour and minute hands appear to be original. The brass four pillar movement is original to the case and dial, of eight day duration, with hourly rack striking, strike repeating, and calendar work.
Escapement is anchor recoil, and the weights are lead.
Joshua Harrocks is listed by Baillie and Loomes as working in Lancaster from 1748 to 1764, and later in Eamont Bridge, Cumbria. Baillie notes his production of tower clocks.