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Yes, they do, although in a few areas ferruginous igneous rocks or magnetic iron-ore close to the cave can introduce errors.
Until the recent invention of range-finding and position-locating instruments like the "Disto" (t.m.) the three measurement instruments for surveying caves were a builder's tape-measure for distances, a clinometer for slope angles and a magnetic compass for bearings. The latter two are types calibrated and read to 0.5º.
In high-grade cave-surveying the lengths and angle measurements from the above were, or are, then usually converted to (x,y,z) co-ordinates for plotting.
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Would a magnetic compass be suitable to be used for space travel?
No. Magnetic compasses work based on the Earth's mantic field, in space there is no magnetic field for the compasses to work with. A different system, possibly similar to Global Positioning System (GPS) might work, call it the Universal Positioning System. On certain rocky planets it could work, but some planets don't have a magnetic field, like Mars. So a traditional magnetic compass wouldn't work in space, or at least it won't get you where you want to go.
How do compasses and astrolabes help sailors?
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Do astronaut need compass?
Sure, astronauts use compasses frequently, but on the Earth ground, not in space. Compasses only work in two dimensions on a surface like Earth's, where there is a significant body of iron in the celestial body's core. Then only if the core is magnetiized, which it would most likely be, due to the spin of the celestial body. Astronauts in space are in 3 dimensions, and in space there is no iron core to be magnetized. Compasses are useless in space, assuming they are far enough away from Earth to not pick up Earth's magnetic flux lines.
What did navigators rely on to find there way before compasses were invented?
There brains
Does the compass have to have a magnet to work?
Thepermanent and atemporary magnet.
What is a sentence using compasses?
None of their compasses would work because of the magnetic ore in the hills.
What is the possessive form of the word Compasses?
The plural possessive for compasses is compasses'.
Where did the miners work?
caves
How magnets work in everyday things?
they work in eg. compasses, fridge doors, and in some handbag clips.
How many types of compasses are there?
There are two main types: Magnetic compasses and gyro compasses.
Why do you think compass might not work near storm power lines?
Compasses do not work well in the presence of of electromagnetic fields.
Will a compass work on an aluminum boat?
Yes, if u buy those aluminum made compasses:)
What is the possessive form of compasses?
The possessive form of compass is compass's.
What is the plural form of compasses?
Compasses is the plural form of compass.
Do compasses use electromagnets?
No. compasses use a complex spinner.
Is the earth an electrically charged object?
Yes, it has a very strong magnetic force. That's why compasses work...
Why did Europeans use compasses?
They used compasses to navigate on the sea and on land.
