Trestle (mill)
For other uses, see Trestle (disambiguation).
![](../I/m/Fotothek_df_rp-d_0560014_Mockrehna-Langenreichenbach._Bockm%C3%BChle_bei_der_ehem._Feldm%C3%BChle%2C_Detail.jpg)
A mill's trestle.
The Trestle of a Post mill is the arrangement of the Main post, crosstrees and quarterbars that form the substructure of this type of windmill. It may or may not be surrounded by a roundhouse. Post mills without a roundhouse are known as Open Trestle Post Mills.
![](../I/m/Boardmans_Drainage_Mill_No_2.jpg)
A Trestle Mill.
A Trestle Mill is a variety of Smock mill, usually without weatherboards, formerly used for drainage in the Norfolk Broads.
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