承装承修水准仪一级二级三级四级五级承装修办资质单
水准仪(英文:level)是建立水平视线测定地面两点间高差的仪器。原理为根据水准测量原理测量地面点间高差。主要部件有望远镜、管水准器(或补偿器)、垂直轴、基座、脚螺旋。按结构分为微倾水准仪、自动安平水准仪、激光水准仪和数字水准仪(又称电子水准仪)。按精度分为精密水准仪和普通水准仪。
 
每公里往返测量高差标准偏差                     ≤
望远镜                                                   正像
放大率                                                   38×
物镜口径                                                45mm
短视距                                               
乘常数                                                   100
加常数                                                   0
补偿器工作范围                                       30′
安平精度                                                ± ″
圆水准器灵敏度                                       10′/2mm
测微范围                                                10mm
测微尺格值                                            
可估读值                                               
 
承装承修水准仪一级二级三级四级五级承装修办资质单