Study on the automatic measurement system of invar leveling rod.

因瓦水準(zhǔn)尺自動檢測系統(tǒng)的研究。

The sliding sight on a surveyor's leveling rod.

標(biāo)板：勘測水準(zhǔn)標(biāo)尺上的滑動觀測器

TO eliminate error caused by the rod being tipped forward or backward, the rodman waves the rod ,or tilts it slowly forward and backward,and the leveler takes the least reading. For less precise leveling, as when rod rcadings for ground points are determined to the nearest 0.1 ft, usually less care is exercised in keeping the bubble centered and the rod vertical,and the observations are no checked.

為了消除所造成的誤差棒正在向前或向后大香线蕉视频观看国产，在羅德曼波桿在线看片y，或傾斜，慢慢前進(jìn)人人人摸人人操，后退欧美一级情欲视频在线播放不，和矯直需要至少不到精密水準(zhǔn)，如棒為確定地面點到最近的0.1英尺国产成人动作片福利姬在线播放，通常較少照顧行使維持泡沫中心和棒垂直欧美大黄8岁进入内射，沒有檢查。

The mechanical leveling system can realize accurate leveling of the platform by servo-motors and drive system, braking by motor brake (worm and worm wheel system features self-locking) to permanently lock the support system after leveling. Bellows outside outriggers functions sealing and dust-proof of the screw rod; guiding slide blocks are used to prevent screw rod from rotating; displacement sensors installed inside drive system deliver real-time information to determine platform height; load cells deliver data of loading conditions of every outriggers in balancing.

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