LaCoste &Romberg(LCR)model G/D grayimeters with electrostatic feedbeck system have the best precision in the world at present time when they are used for relative gravimetry.

• 装配了静电反馈装置的LCR-G／D型重力仪是目前世界上观测精度最好的相对重力仪，静电反馈装置的转换参数确定得正确与否是影响观测精度的重要因素之一。