Measuring Tilt with an Automatic Level,

Abstract

The long-term or short-term tilt of structures such as locks or dams may be measured with an automatic level which has been temporarily modified for the purpose. The modifications consist of the addition of an autocollimating eye-piece 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. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 05, 1982
Accession Number
ADA110927

Entities

People

  • Kenneth D. Robertson

Organizations

  • Geospatial Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Attachment
  • Automatic
  • Calibration
  • Climate Change
  • Compensators
  • Deflection
  • Displacement
  • Engineers
  • Errors
  • Falling Bodies
  • Focal Planes
  • Instrumentation
  • Light Sources
  • Line Of Sight
  • Measurement
  • Telescopes

Fields of Study

  • Physics

Readers

  • Spectroscopy.
  • Systems Analysis and Design
  • Vision Science/Vision Psychology/Cognitive Neuroscience.