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https://hdl.handle.net/11681/11365| Title: | An instrument to monitor the tilt of large structures |
| Authors: | Robertson, Kenneth. |
| Keywords: | Autocollimation Automatic Level Dam Instrumentation Dam Safety Tilt Measurements |
| Publisher: | U.S. Army Engineer Topographic Laboratories. Engineer Research and Development Center (U.S.) |
| Series/Report no.: | ETL ; 0313. |
| Description: | Technical report Abstract: The long-term or short-term tilt of structures such as locks or dams may be measured with an automatic level that has been temporarily modified for the purpose. The modifications consist of the addition of an autocollimating eyepiece and an optical vernier. A calibration mirror is also required for the measurement of long-term tilt. Accuracies of 1 to 5 seconds of tilt may be obtained. |
| URI: | http://hdl.handle.net/11681/11365 |
| Appears in Collections: | Documents |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ETL-0313.pdf | 1.23 MB | Adobe PDF |  View/Open |