Abstract: A device being used for measuring the internal diameter of a pipe, which including a tape mounted into a flat elongated body having holes to allow a string to be pulled out of the flat elongated body. The tape includes hole at a first end for connecting a first end of an elastic band and the string to the tape. The flat elongated body includes a tongue having hole for connecting a second end of the elastic band. The string pulls the tape out of the flat elongated body for measuring the internal diameter of the pipe. The tape includes also hole at a second end for connecting a circular member keeping the device at a right angle in bottom of the pipe when reading the diameter of the pipe with the inspection camera, and also blocking the tape at the input of the flat elongated body when the elastic band bringing the tape into the elongated body.

Abstract: Apparatus for measuring the length of textile material wound onto a lap beam and in particular, onto a dyeing beam, having (a) a pressure roll bearing upon the beam lap and mechanically connected with a displacement detecting transducer that emits measurement impulses, (b) a beam-driven shaft encoder that emits a predetermined number of calculation impulses for each revolution of the beam, and (c) a computer that calculates the partial lengths of the laps (lt) from the measurement impulses and the calculation impulses. The displacement detecting transducer is movably or slidingly interengaged with an elongated linear member in the form of a toothed rack hinged so that a projection of one end always intersects the longitudinal axis of the lap beam.