Precision centering trivets

• Main Authors: YUAN CHENGZHONG, YANG YU, PENG WEIGUO, ZHOU JINGYONG, TAO BO, JIANG XIERONG, CHEN XINYI, YAO YUNFENG
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2008
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The utility model provides an accurate centring tripod mounting which can keep the height of surveying and mapping instrument to be a fixed value. The accurate centring tripod mounting comprises a tripod mounting body and two adjustment legs. A centring axis, a gradienter and a pedestal are arranged at the tripod mounting body. The centring axis and the two adjustment legs compose three supporting legs. The pedestal and the centring axis are respectively arranged in upper and lower two sides of the tripod mounting body. The distance between the pedestal and bottom of centring axis is a fixed value. Because the distance between the pedestal of the utility model used for putting surveying and mapping instruments and the bottom of centring axis is a fixed value, the distance between the surveying and mapping instruments and circular cone vertex in the centring axis bottom is also a fixed value. The instrument height never changes no matter how to change measuring point on the ground. Measurement error generated