A COMPARATOR CALIBRATION METHOD

Abstract

A method is described for calibrating precision comparators by using grid plates which have been calibrated by means of a triangulation method based exclusively on distance measurements. The method used for calibrating the grid plate provides measurements of the x, y coordinates for selected grid intersections to an accuracy better than plus or minus 1 micron. Using calibrated grid plates, the comparator may be calibrated to determine instrument constants such as: (1) Overall scalers of the measuring screws. (2) Non- orthogonality between the x and y movements. (3) Translation and rotation between grid and comparator coordinate systems. The results of a number of calibrations are shown.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1967
Accession Number
AD0650087

Entities

People

  • Heinz G. Poetzschke

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Civil Engineering
  • Coefficients
  • Coordinate Systems
  • Engineering
  • Engineers
  • Jet Propulsion
  • Measurement
  • Measuring Instruments
  • Military Research
  • New Mexico
  • New York
  • Observatories
  • Orthogonality
  • Standards
  • Translations

Readers

  • Approximation Theory.
  • Computational Modeling and Simulation
  • Phased Array Antenna Design.