page_title: Windmill Hill Mill, Herstmonceux
section_title: Description
hierarchical_section_title: Windmill Hill Mill, Herstmonceux / Description
caption_attribution_description: English: Hammond's Sweep Governor. The partially reconstructed sweep governor in Windmill Hill Mill, Herstmonceux.
context_page_description: Windmill Hill Mill is a grade II* listed post mill at Herstmonceux, Sussex, England which has been restored and now operates as a working mill. The mill is open to the public on most Sundays from Easter until October.
context_section_description: Windmill Hill Mill is a post mill on a two-storey roundhouse. She has four patent sails carried on a cast-iron windshaft and was winded by a tailpole. Winding is now computer-controlled, with an automatic turning device installed that receives information about the wind direction from sensors mounted on the mill. The wooden brake-wheel is of clasp-arm construction, with oak arms and an elm rim. It has 104 cogs and drives a stone nut with twelve cogs. The tail wheel is of cast iron, with 130 cogs. The mill drove two pairs of millstones, arranged head and tail. The headstones are Peak stones and the tailstones are French Burrs. The body of the mill is 21 feet 3 inches (6.48 m) long and 12 feet 3 inches (3.73 m) wide, the largest surviving post mill by floor plan in the United Kingdom. It is 50 feet 10 inches (15.49 m) high to the roof, the second tallest post mill in England. The roundhouse is 22 feet 6 inches (6.86 m) in diameter and has a single-storey lean-to extension of part of its circumference. When originally built, the mill had a single-storey roundhouse which was raised in the 1850s. The Hammond's Sweep Governor was fitted in the 1870s.
caption: Hammond's Sweep Governor
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