In nautical terms, two triangles with the apex on top, located above each other indicate north on buoys. See Cardinal Marks A compass also points north in the northern hemisphere.
north
A compass rose tells a person which way is north on a map.
A directional indicator is usually an arrow (or a compass rose) printed on a map which indicates the orientation of the map in reference to the cardinals N-S-E-W. North is by far the most common; on a North referenced map, North would be top center (although this is relative to how one holds the map) ;-)
its an indicator
A bank-and-turn indicator is an instrument in an aircraft cockpit which incorporates the functions of a bank indicator and a turn indicator.
Which Indicator?
A bank-and-turn indicator is an instrument in an aircraft cockpit which incorporates the functions of a bank indicator and a turn indicator.
The North Star, aka Polaris and Alpha Ursae Minoris, is a typical Population I Cepheid Variable star. Its only claim to fame is that it is within half a degree of the celestial north pole, making it a reliable indicator of true north to observors. Further info: http://en.wikipedia.org/wiki/Polaris
The red arrow on a compass is the magnetic north indicator, pointing to the Earth's magnetic north pole. The black arrow is the direction of travel arrow, used to align with your desired direction of travel.
When was the forst vegatable indicator made in? When was the forst vegatable indicator made in?
Sodium chloride (NaCl) is not an indicator in analytical chemistry.
The indicator of acid is baking soda.