compass

noun

• A magnetic or electronic device used to determine the cardinal directions (usually magnetic or true north).
• A pair of compasses (a device used to draw an arc or circle).
• The range of notes of a musical instrument or voice.
• A space within limits; an area.
• An enclosing limit; a boundary, a circumference.

  "within the compass of an encircling wall"

• Moderate bounds, limits of truth; moderation; due limits; used with within.
• Scope.
• A passing round; circuit; circuitous course.