yarn-tester

Century Dictionary and Cyclopedia

1. n. An apparatus for testing the strength of yarns and finding their elastic limit or stretch. The yarn to be tested is placed on two hooks, that are slowly drawn apart by means of a screw till the yarn breaks. A dial indicates the breaking-strain of the yarn in pounds, and another dial records the elastic limit.
2. n. A device for reeling yarn on a blackened cylinder, to throw it into sharp contrast, for the purpose of examining it for quality, evenness, etc.