declinator
Definition
- Noun:
- Instrument for measuring magnetic declination: A "declinator" is a device used to measure the angle between magnetic north and true north, known as magnetic declination. This instrument is primarily used in navigation, surveying, and geophysics.
- Alternative form of 'declinometer': The term "declinator" is a less common variant of "declinometer," which has the same meaning.
Usage Examples
- Noun:
- The surveyor used a declinator to determine the local magnetic declination before setting up the compass. (The surveyor used the instrument to measure the angle between magnetic and true north.)
- Old declinators were often made of brass and glass, with a magnetized needle. (Historical instruments for measuring declination were crafted from these materials.)
Advanced Usage
"to calibrate a declinator": to adjust the instrument to ensure accurate readings.
- Before the expedition, the team had to calibrate the declinator to account for local magnetic anomalies. (They adjusted the device to correct for environmental factors.)
"declinator readings": the data obtained from the instrument.
- The declinator readings showed a declination of 10 degrees west. (The measurements indicated the magnetic deviation.)
Variants and Related Words
Declinometer (n): a more common term for an instrument that measures magnetic declination.
- The declinometer is an essential tool for geophysicists studying Earth's magnetic field. (It is a specialized device for measuring declination.)
Declination (n): the angular difference between magnetic north and true north.
- Understanding declination is crucial for accurate navigation. (It is a key concept in using a compass.)
Synonyms
- Declinometer: the primary synonym, referring to the same instrument.
- Magnetic declination indicator: a descriptive term for the device.
Related Idioms