The aim of the present research was to create a method for detecting the position and motions of the wrist and fingers at work, to design and create an experimental device to measure and evaluate the training task. Therefore, the issue of finger motions was searched, and the evaluation method was proposed. The experimental device used an optical device for motion monitoring, the so-called Leap Motion, which exports the measured data to a virtual environment created in the Unity3D development environment. This environment enables to read the required partial turning of the individual elements of the hand using the script. The training task consisted of a simple assembly. The evaluation is presented in this article.