Jewelers' and silversmiths' weights and measures
Edition: 2nd ed
Series: Circular of the Bureau of Standards -- no. 43
Publisher: G.P.O.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 46
Subjects: Jewelry -- Weights and measures; Carat (Unit of weight); Weights and measures
Notes: At head of title: Dept. of Commerce

"A revised and enlarged edition of Bureau of Standards circular no. 43 (1st edition), issued November, 1, 1913, entitled "The metric carat."

"January 24, 1921."