Product features: The compass is also called the compass needle， is a magnet for use in ancient China invention refers to polar made guide apparatus. Compass appear in the Warring States period. It is made of naturalmagnet. Looks like a spoon， round bottom， can be placed on a smooth"territory" and to maintain a balance， and can rotate freely. When it is stationary， the spoon handle will point to the south. The ancients called it"compass". Product introduction: Name: compass compass Material: Copper Size: about 1cm to about 7.5cm， diameter and high Weight: about 74g Packaging: general packaging

Product introduction:

[introduction] compass

The compass is also called the compass needle， is a magnet for use in ancient China invention refers to polar made guide apparatus.

Compass appear in the Warring States period. It is made of naturalmagnet. Looks like a spoon， round bottom， can be placed on a smooth"territory" and to maintain a balance， and can rotate freely. When it is stationary， the spoon handle will point to the south. The ancients called it"compass". To determine the direction in addition to the compass， also need to have matching plate position.

The initial use of the compass， may not set a fixed position， with themeasurement range， the magnetic needle compass compass anddevelopment.

Closely related to now the compass and the life of people， used to measure housing direction， or camping and adventure lovers standingitems， is also home decoration good jewelry， more for the geomantic omen.