- Publication Title:
- Proving rings. Specification for proving rings for calibrating testing machines.
- Display Title:
- Proving rings. Specification for proving rings for calibrating testing machines.
- Corporate Agency Authors:
- National Bureau of Standards and Commerce Department
- Sort Author:
- National Bureau of Standards
- Date:
- Mar. 18, 1939
- Publish Date ISO Format:
- 1939-03-18T00:00:00Z
- Publication Start:
- 19390318
- Publication End:
- 19390318
- Corporate/Agency Author:
- National Bureau of Standards
- Publication month:
- 10
- Publication year:
- 1939
- SuDoc number:
- C 13.16:548
- Description:
- 6 p. 4°
- Notes:
- (Letter circular LC548.) [Processed. Supersedes LC409.]
- Notes:
- (Letter circular LC548.) [Processed. Supersedes LC409.] † Distribution Made by Issuing Office.
- Availability:
- † Distribution Made by Issuing Office.
- Monthly Catalog date:
- May 1939
- Monthly Catalog issue number:
- 533
- Monthly Catalog page number:
- 1
- Monthly Catalog issue date:
- 1939-05-01T00:00:00Z
- Record start page number:
- 623