Proving rings for calibrating testing machines
By: by Bruce L. Wilson, Douglas R. Tate, and George Borkowski. <Issued August 14, 1946>
Contributors: Tate, Douglas Roy, 1912- joint author.; Borkowski, George, 1909- joint author.
Series: U.S. National Bureau of Standars. Circular ...; C454; Circular of the National Bureau of Standards ;; C454.
Publisher: U.S. Govt. Print. Off.
Published: 1946
Place of publication: Washington
Language: eng
Number of pages: 21
Subjects: Testing-machines.; Calibration.
Notes: "References": p. 18.
At head of title: U.S. Dept. of Commerce ... National Bureau of Standards ...