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Record Details

Record 12 of 3367
Two-Dimensional Vernier Scale
Author and Affiliation:
Juday, Richard D.(NASA Lyndon B. Johnson Space Center, Houston, TX.)
Abstract: Modified vernier scale gives accurate two-dimensional coordinates from maps, drawings, or cathode-ray-tube displays. Movable circular overlay rests on fixed rectangular-grid overlay. Pitch of circles nine-tenths that of grid and, for greatest accuracy, radii of circles large compared with pitch of grid. Scale enables user to interpolate between finest divisions of regularly spaced rule simply by observing which mark on auxiliary vernier rule aligns with mark on primary rule.
Publication Date: Jan 01, 1992
Document ID:
(Acquired Nov 04, 1995)
Accession Number: 92B10034
Subject Category: MECHANICS
Report/Patent Number: MSC-21700
Document Type: NASA Tech Brief
Publication Information: NASA Tech Briefs (ISSN 0145-319X); 16; 1; P. 59
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Johnson Space Center; Houston, TX, United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
Availability Source: National Technology Transfer Center (NTTC), Wheeling, WV
Availability Notes: Additional information available through: National Technology Transfer Center (NTTC), Wheeling, WV 26003, (Tel: 1-800-678-6882).
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