The Effects of Eliminating Minor Graduations on Dial Reading Performance.

Abstract

An investigation was made to determine dial reading performance using two dial marking schemes; one as they appear in current aircraft and the other with the minor graduation marks eliminated. Four instruments (DC voltmeter, fuel pressure indicator, exhaust gas temperature indicator, and transmission oil temperature indicator) were used to examine each scheme. Results indicated that performance was significantly better with the modified designs (minor graduations eliminated). A second result was that, regardless of the design used, some instruments are significantly more difficult to read than others. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1977
Accession Number
ADA046709

Entities

People

  • Alan M. Poston

Organizations

  • Human Engineering Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Analysis Of Variance
  • Brightness
  • Control Panels
  • Engineering
  • Errors
  • Exhaust Gases
  • Gases
  • Human Factors Engineering
  • Human Systems Integration
  • Indicators
  • Instrument Dials
  • Instrument Panels
  • Intervals
  • Security
  • Time Intervals
  • Voltmeters

Readers

  • Geodesy
  • Systems Analysis and Design