Fog, Mems Imu, Inclinometer manufacturer / supplier in China, offering Built-in Magnetic Sensors and Driving Chips Digital Output RS485 RS422 RS232 High-Precision Compass Sensor, Low Power Consumption Surveying Device Mems 3D Electronic Compass, 3D Compass with 360 Degree Heading Range and High Precision Geographic Surveying Instrument and so on.