Professionele blauwdruk. Ernstige aardige slimme man zitten van de tabel en met behulp van de tekenhulpmiddelen tijdens het werken aan een technische blauwdruk - Stockfoto’s en -afbeeldingen

Life work. Senior focused male engineer looking down while using pencil and creating blueprint

Skillful engineer. Serious nice senior man sitting at the table and holding a pair of compasses while working in the office

Engaged in work. Grey-haired senior man sitting at the table and using a protractor while working on the creation of a blueprint

Difficult work. Serious successful male engineer looking down while holding compasses and concentrating

Absorbed in thoughts. Grey-haired senior man sitting at the table, holding a pair of compasses and looking at them, thinking about something

Experienced professional. Grey-haired senior man sitting at the table, holding a pair of compasses to draw a blueprint and looking intently at one of its parts

New innovations. Smart pleasant aged man sitting at the table and doing a drawing while working on an eco project

Necessary equipment. Pleasant grey-haired senior engineer sitting at the table, holding a compass and reaching his hand to take a pencil while working on a blueprint

Important work. Pleasant professional engineer using laptop and designing wind turbines while workign in the office

Move around. Selective focus of wind turbine model standing on the table while a smiling professioanl engineer touching it and moving its blades

Eco project. Professional senior engineer working on the project of wind turbines while standing in the office and holding blueprint

Eco project. Close up of windmills models standing on the table while professional eco engineer standing in the background

Thinking process. Charming young man sitting at the table and drawing a blueprint while looking at two wind turbines standing on the table

Involved in process. Selective focus of wind turbine models standing on the table while a professional female engineer standing in the background with blueprint in hands

Model of windmill. Loving caring father feeling very joyful while showing his son model of ecological windmill

Checking out results. Handsome young engineer holding a blueprint and comparing it with the models of wind turbines standing on the table