Ergonom, a computer-aided model, was developed by Swat and Krzychowicz to diagnose machines or other technical objects for work posture stress. This model evaluates loads at the design stage that would result from workplace postures dominated by standing and walking positions. The model allows the designer to test various manual controls and work area arrangements to obtain an ergonomically satisfactory solution and enables the prepurchase testing of imported machines with regard to anthropometrical dimensions (body dimensions—size, weight, height) of the national operator (worker) population, on the sole basis of technical documentation (Swat and Krzychowicz 1996)..