Gigameter
A gigameter (Gm) is a unit of length in the metric system, equal to 1 billion meters (1 Gm = 10⁹ meters). Gigameters are used to measure very large distances, often within the solar system. For example, the average distance from Earth to the Sun is about 150 gigameters, or 1 astronomical unit (AU). While not commonly used in everyday life, gigameters are helpful in astronomy and space science to describe distances between planets or other celestial bodies.
Long Reed
The long reed is an old English unit of length used primarily in measuring land, especially in agriculture and surveying. It is traditionally equal to 16.5 feet or 5.03 meters.
The long reed was used alongside other units like the rod, pole, and perch, often interchangeably, to measure distances and plot boundaries.
Key points:
1 long reed = 16.5 feet ≈ 5.03 meters
Used historically in land measurement and agriculture
Equivalent or similar to the rod, pole, or perch
Important in English customary measurement systems
Though obsolete now, the long reed is part of the rich history of traditional English measurement units.
No conversions available for length.