This model shows a guyed mast used for wind speed measurement when assessing planned wind farms. The mast reaches heights of up to 150 m and is installed on undeveloped land along a planned windmill axis. The structure is based on steel pipe trusses with a triangular cross-section and three sets of prestressed cables per level for optimal stabilization. To ensure accurate measurement data, anemometers, and wind vanes are correctly positioned in accordance with ISO 61400-12-1. The structural calculation and construction were carried out by Lasser Eólica S.L. in Madrid, Spain (© Lasser Eólica S.L.).