Overhead flat-lay composition of vintage scientific and measurement instruments: antique brass astrolabes with tarnished rotating rete frames, old ivory-handled surveyor's compasses with faded brass casings, vintage brass protractors with engraved degree markings, antique barometers with clouded glass faces and walnut cases, hand-held magnifying glasses with worn leather cases, vintage stereometric calculation devices with exposed mechanical gears, decorative brass magnifying loupes, and ornate bronze sundials with gnomon shadows arranged on reclaimed weathered barn wood, warm sepia and amber tones, soft directional window light, museum display arrangement, moody atmospheric shadows, rich aged brass and aged ivory texture details, classic 19th century scientist's treasure aesthetic, forgotten discovery collector's items