A late 19th-century mahogany longcase regulator by Batty & Sons, Manchester, the architectural case has canted corners to the hood and trunk, the rectangular glazed door shows of the zinc/steel temperature-compensated pendulum, the rectangular plinth stands on a single plinth, the 13.5-inch silvered regulator dial is signed on applied plates, the substantial movement has A-framed plates united by heavy screwed pillars and is fixed to a wooden seatboard with two large hand screws, the six-spoked wheels are screwed to their collets and mesh with high count pinions, the dead-beat escapement has adjustable jewelled pallet nibs that are held in a brass frame, the pendulum is suspended from a cast-iron bracket on the backboard and follows Thomas Buckney's (1838-1890) design, which incorporates steel and zinc tubes to compensate for the expansion and contraction of metal in hot and cold temperatures, the brass-cased weight has an integral pulley and is positioned so that it descends down the side of the case 6ft 7in (201cm) high.