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Abstract. A mechanical instrument for the measurement of fibro‐elasticity is described. It consists of a mechanism for control of the force used, which enables the examiner to exert the same pressure on the material each time, and another mechanism for recording the fibro‐elasticity. The applied force K can be varied and is calibrated by the use of a balance. The fibro‐elasticity is characterized by the angle a between the walls of the impressed area recorded on the indicator mechanism. The instrument has been tested on foam rubber materials, on water‐filled rubber balloons, and on the uterine cervix both in vivo and in vitro. The results show that within a large range of a and K to a first approximation the following relationship is valid: F=α/ K where F is a constant which on a relative basis can be used to characterize the elastic properties of a material. A brief discussion of the properties and the applicability of the instrument is given.
Trygve Bakke (Mon,) studied this question.