FIELD: measurement technology, measurement of linear characteristics of flexible sheet objects, for instance, materials used in light industry. SUBSTANCE: readings of instrument are taken in two test points. One point corresponds to coordinate of edge of support, another point corresponds to coordinate of surface of material after its bending relative to edge of support. Rotary support with spring-loaded clamp to seize edge of measured object mounted on carriage of instrument is key element of gear fixing specimen of flexible material. EFFECT: increased accuracy of measurement of linear characteristics of flexible sheet materials. 3 cl, 3 dwg
