Editing Millstone (section)

==== Edge mill ====
{{Main articles|Edge mill}}
Horizontal use of the millstone is generally associated with milling. When the millstone is "upright", i.e. on its edge, it is used for grinding, crushing, or milling operations. In this configuration, the nether millstone is fixed by its eyebolt to a vertical [[Mast (sailing)|mast]] located centrally on the nether millstone which acts as a pivot. Depending on the size of the installation, and to maintain the verticality of the mast, its upper part may be attached to a beam overhanging the mill. The current millstone is rotated either " by means of force", or more often, in a [[riding hall]]. In this way, the mill is driven by a double movement, turning on itself while pivoting around the mast, as in the Roman trapetum. In this type of device, the millstone is monolithic or made up of a paved or even masonry surface. Depending on the product to be processed, the millstone may be slightly concave, with a rim around the periphery to avoid dispersing the crushed material.{{Cn|date=March 2025}}
<gallery mode="packed-overlay" heights="200" widths="250">
File:Olive_press_0723.jpg|Olive mill - [[Nazareth]]. The ''spar'' through the ''eyelet'' is held in place by a [[dowel]] and is used to turn the current millstone.
File:High_Atlas-The_olive_grinding_mill_(js).jpg|Olive mill. [[High Atlas]]
File:Tou_d'preinseu,_Jèrri.jpg|"Apple lathe" driven by a horse. Ring-shaped trough serving as a lying millstone. The Elms, [[Jersey]]
File:Korean.Folk.Village-Minsokchon-10.jpg|Animal-drawn millstone. [[Korea]]
File:Chocolaterie-nestlé-broc_mélangeur_fève_de_cacao-ancien-3.jpg|Old Millstone equipped with [[windrow]] [[Plough|ploughs]], used to grind cocoa beans
File:Agris1.1.JPG|Millstone and [[riding hall]] - Agris (Charente)
File:Crocq08.JPG|Millstone and oil press - [[Crocq]] ([[Creuse]])
File:Almazara_2010.JPG|Olive mill with four conical millstones (Spain)
</gallery>