We can see that besides the central magnetic needle there are also several concentric rings filled with information. On them are written dispositions like the 8 trigrams, the 8 directions, the 24 directions or mountains, astrological data as the 28 constellations, the celestial trunks, the earthly branches, and many other concepts that are applied to the art of feng shui.

Electronic compass is an instrument of measuring position,which utilized the magnetic field. It will affect the accurate of the mesurement data in the complicated magnetic fields. Please use the compa

This instrument could measures elongated shapes, lines and circular areas, removing the need for grids, charts, or calculators. The measuring accuracy is better than +/-0.2 percent, so its results ar

This compass is composed of triaxial magnetoresistive sensor , triaxial speed sensor triaxial gyro sensor.It can show the data of azimuth 、 roll angle、trim angle、temperature、air pressure and elevation

The compass is a must have tool for anyone working in the field of earth science or geological surveying, mapping or for navigational use. The compass performs basic tasks such as orientation, while t

The compass is a must have tool for anyone working in the field of earth science or geological surveying, mapping or for navigational use. The compass performs basic tasks such as orientation, while t

The Elevation Latitude and longitude laser compass model DQL-16ZJ is suitable for mining and surveying in forestry resources,. For example, Magnetic bearing, horizontal angle, vertical angle, elevatio

Lightweight, compact surveying compass ideal for use where a small pocket transit is needed for general surveying. Includes carrying case with shoulder strap.