Levenswerk. Senior gericht mannelijke ingenieur kijkt neer tijdens het gebruik van potlood en het maken van de blauwdruk - Stockfoto’s en -afbeeldingen

Professional blueprint. Serious nice smart man sitting the table and using drawing tools while working on a technical blueprint

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

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

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

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

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

Charged with positivity. Joyful smiling engineer sitting at the table and drawing a blueprint with compasses

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

Important task. Professioanl enginner sitting at the table and working on wind turbine project while using laptop

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

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

Eco-friendly technologies. The focus being on the hand of a pleasant upbeat man sitting at the table, talking on the phone and touching the blade of a wind turbine model

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