Compass & Spirit Level
Compass: an instrument containing a magnetized pointer which shows the direction of magnetic north and bearings from it.
Spirit Level: a device consisting of a sealed glass tube partially filled with alcohol or other liquid, containing an air bubble whose position reveals whether a surface is perfectly level or plumb.
Compass: an instrument containing a magnetized pointer which shows the direction of magnetic north and bearings from it.
Spirit Level: a device consisting of a sealed glass tube partially filled with alcohol or other liquid, containing an air bubble whose position reveals whether a surface is perfectly level or plumb.
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