A two-page excerpt from an 1900 engineering journal describing yarn and thread testing instruments shown at the Paris Exhibition. It covers a yarn-count gauge, Serrell's 'serigraphe' for recording silk tenacity, an apparatus for detecting visible faults in silk thread, a torsion tester by Paul Gée of Lille, and the 'serimetre' tensile tester used by the Lyons Chamber of Commerce. Illustrated with Figs. 4-8; the article is continued in a later issue on fabric-testing instruments.