16 to 17 16 to 17 years 16-17 ability accuracy accurate analytic expertise apprentice apprenticeship arm arms assemble assembling assembly at work attention to detail boy boys casual casual attire casual clothes casual clothing casual wear caucasian caucasian appearance caucasian ethnicity close up close ups close-up close-ups closeup closeups color color image color printer colour colour image colour printer competence competent computer printer craft crafts cropped differential focus diligence economic economics economy education education system electronics employment market engineering equipment european exact exactitude exactness exchange exchanging expert knowledge expertise fabrication factories factory hand hand work handcraft handicraft hands handwork human human being human beings human hand human hands humans indoor indoor shot indoor shots indoors industrial industries industry ink cartridge insert installing interior interior view interiors job job market job training jobs know how know-how labor labour labour market learn learning leisure wear male male adolescent male adolescents male teenager male teenagers manual labour manual work mounting nahaufnahme occupation one person one person only only one person part of partial view people person person in education persons photo photography photos plant plants precise precision print cartridge printers production productions profession professional occupation qualification repair repairing selective focus skill skilled switzerland technician technicians technological technologies technology teen teenage teenage boy teenager teenagern teenagers teens trainee trainees vocational education vocational training work workshop workshops 1