EXPERIMENTAL TECHNIQUES FOR LEVELS OF HIGH PRECISION USING THE ZEISS Ni2 AUTOMATIC LEVEL.

Abstract

Instrumentation and Techniques developed by the U. S. Lake Survey for levels of high precision are described. Automatic, or 'self-leveling' Zeiss Ni2 instrument is used with plane-parallel plate micrometer. Special techniques are used to compensate for systematic errors unique to automatic levels. Levels can be run with these methods to a tolerance of 1.5 millimeters times the square root of the length of the section in kilometers. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1969
Accession Number
AD0693804

Entities

People

  • Ralph Moore Berry

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Automatic
  • Instrumentation
  • Leveling
  • Levels (Instruments)
  • Measuring Instruments
  • Micrometers
  • Precision
  • Square Roots

Fields of Study

  • Physics

Readers

  • Aquatic Ecology
  • Geodesy
  • Optical Physics and Photonics.