The verification accuracy of this device was improved by adopting right-angled reflecting prism combined with T2002 electronic information theodolite to measure reference ang.

• 该装置采用直角反射棱镜与T2002电子信息经纬仪联合测量作为基准角,以提高检定精度,通过对数字水平仪的检定实验证明了装置的有效性。