Title

Design Of Digits

Date

1954

Index Abstract

Online

Photo Quality

Not Needed

Report Number

WADC TR 54-262

Creator

Crook, Mason N.

Baxter, Frances Schulze

Corporate Author

Tufts College, Institute For Applied Experimental Psychology

Laboratory

Aero Medical Laboratory

Extent

69

PB Number

PB116521

NTRL Accession Number

AD050080

Identifier

AD0050080

Access Rights

Unknown

Distribution Classification

1

DTIC Record Exists

No

Distribution Change Authority Correspondence

AFAL LTR

Distribution Conflict

Fix

Index Price

$3.25

Index In

U.S. Government Research Reports, vol. 23, no. 4, p.143, 4/15/1955

Abstract

Design characteristics of transilluminated numerals in the Air Force-Navy Aeronautical style at very low brightness were investigated. The experimental results indicate narrow stroke widths and close spacing were unfavorable. With area held constant, the effect of height/width ratio varied from digit to digit. Configurational characteristics could not be readily improved, but a round tipped "3" in an open style was found to be superior to the standard flat-topped design. Data on confusions among both intact digits and digits with small stroke defects showed reasonable degrees of consistency. A number of special observations for which the test situation was well suited threw light on problems of experimental technique. From an analysis of the literature it was concluded that most of the contradictions on digits by different investigators can be resolved and the data fitted into a coherent pattern. This report is of value to the Air Force in that the principles given can be used as guide lines for charts and checklist designs to give better readability.

Report Availability

Full text available

Date Issued

1954-06

Provenance

Hunt Library, Embry-Riddle Aeronautical University

Type

report

Format

1 online resource