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Vector illustration. The wise old master of medieval Europe teaches his young apprentice the secrets of engineering drawingsの素材 [FY310157856471]

機器 1520 academy achievement adult africa african age spots algeria algerian algiers ancient ancient rome angry antique appealing apprentice apprenticeship archimedes aristotle art artisan artistic artwork assertive assured attention attentive audience author background bald ball beard belief black blackboard blue blueprint board book bow boy bucket build builder building building industry business cap carpenter cartoon caucasian celebration ceremony certificate chalk character characters chart chemist chemistry children class class teacher classroom clip coat cochin college comic company concentrated concentration concepts concerned confidence confident considerate conspiracy construction construction industry constructor consultant contractor corporal counting craft crafts craftsman creativity credential culture curiosity cute cutter cutting degree democracy design desk development diploma discovery discussing doctor document doityourself draft draw drawing drill earth educating education educator element elementary end engineer engraved engraving equipment etching ethics euclid expectations experiment expertise explain explaining explanation filings first flash foreman foremaster frame front funny gloves goggles gold graduation gray greece greek grinding group guy hair hall hanging hardhat hat hearing protection helmet hernault high school historic historical history home improvement humor humorous idea ideas ignoramus ignorance illiteracy illustrated illustration indoors industrial industry information instructor intelligence intense interest intern inventor islam islamic isolated job training johannes kepler kid knowledge lab laboratory lamp lazy leadership learn learning lecture lecturer lesson lifestyle line listening literacy logic looking away loss mad making male man manager manual manufacturing map master masters math mature adult medical medicine meeting men mesh moorish moslem motivation muslim necktie negligent nicolaus copernicus notes numbers object occupation office old old man one optimistic outline outlook paint painter painting pair paper parchment pattern people person persons philosopher philosophy physicist pictorial picture plan planing plato plot pointing portrait potential presentation print processing product production professional professor project prospect protection proud punishment pupil pure purity pythagoras reading repair research retro revival ribbon roll rolled roller brush roman rome rope safety safety glasses sage salon sandals scheme scholar scholarship school school desk schoolbag schoolboy schoolchild schooling schoolwork science scientist screen scroll scrolls sculpture secondary seminar senior shape sheet show showing silhouette site sitting slovenly smile socrates spectator stamper standing string structure student students studying success sure symbol talking taskmaster tassel teacher teaching technical technology teenage teenagers think thinker thinking toga tool trainee trainees trainer training trestle table tunic turban tutor tutorial tweaking ears two two people talking uniform universe university view vintage virtue vocational training wallpaper wallpaper paste wear wearing white white background william herschel wisdom wise wood woodwork work work clothes work suit work tool worker workshop worry writing years young young adult young man youth zinc