Micro-CT scanning (X-ray microtomography) is a non-destructive analysis technique that provides visualization of the internal structure of materials and it has been widely used in recent years for inspection of different types of materials. Unlike the traditional microstructure observation, X-ray microtomography does not require sample significant and time consuming pre-treatments as cutting and polishing. The objective of this study is to demonstrate the potential of the micro-CT technique for geometrical analysis of textiles. A technique for determining initial geometry of glass knitted fabric at a mesoscopic scale is presented. Geometrical parameters, namely the yarn positional information, shape and dimensions of cross-sections are determined using the X-ray microtomography experimental data. A structural model of the studied textiles is build. The obtained information can be used for further micromechanical modelling.