RELIABILITY OF WHITTEMORE GAGE LENGTH MEASUREMENTS

A large number of measurements on a nickel-steel alloy bar and on brass inserts in the bar were taken to determine if wear was taking place in the alloy standard or in the Whittemore gage. Microscopic examination was used to confirm the dimensional results. It was concluded that neither the gage nor the brass exhibited significant changes in readings but that the alloy showed a change after 1500 readings. It is proposed that for long-term studies an alloy bar with hardened steel inserts should be used. The precision of measurements made with the gage was estimated from the large set of resutls.

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Ashton, H E
• Publication Date: 1977-3

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 130-133
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 5
  • Issue Number: 2
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Alloy steel; Length; Measurement; Measuring instruments; Nickel alloys; Reliability; Wear
• Old TRIS Terms: Nickel steels
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00163624
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 29 1977 12:00AM