Please use this identifier to cite or link to this item: 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 SizeFormat 
ETL-0313.pdf1.23 MBAdobe PDFThumbnail
View/Open