Lancaster, Pennsylvania - Hamilton Watches. Operation - weighing balances screws or timing watches on milligram balance - semi-skilled machine operation by which screws in the balance wheel are weighed to an accuracy of 1/200th of a milligram.

Chicago citation style
Federal Works Agency. Work Projects Administration. National Research Project. ca. 1941-ca. 1942, Works Progress Administration. 5/6/1935-7/1/1939. Lancaster, Pennsylvania - Hamilton Watches. Operation - weighing balances screws or timing watches on milligram balance - semi-skilled machine operation by which screws in the balance wheel are weighed to an accuracy of 1/200th of a milligram.. 1936-01-01/1937-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/518440. (Accessed December 17, 2018.)
APA citation style
Federal Works Agency. Work Projects Administration. National Research Project. ca. 1941-ca. 1942, Works Progress Administration. 5/6/1935-7/1/1939, (1936-01-01/1937-12-31) Lancaster, Pennsylvania - Hamilton Watches. Operation - weighing balances screws or timing watches on milligram balance - semi-skilled machine operation by which screws in the balance wheel are weighed to an accuracy of 1/200th of a milligram.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/518440
MLA citation style
Federal Works Agency. Work Projects Administration. National Research Project. ca. 1941-ca. 1942, Works Progress Administration. 5/6/1935-7/1/1939. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/518440>.
Note: These citations are programmatically generated and may be incomplete.