Compass (architecture)

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In carpentry, architecture, and shipbuilding, a compass is a curved circular form.^[1]

Examples

• A
  compass plane is a plane
  that is convex, length-ways, on the underside, for smoothing the concave faces of curved woodwork.
• A compass saw is a narrow-bladed saw that cuts a curve.
• A compass timber is a curved (or crooked)
  timber, sometimes used in shipbuilding.^{[citation needed}
  ]
• A compass brick is a curved brick.^[2]
• A compass wall is a curved wall.^{[citation needed]}
• A
  compass window is a circular bay window.^[3]
• A
  surveyor's compass
  (or circumferentor) is a measuring instrument used in surveying horizontal angles.