sand clock with hour markers

1920 × 1200

Brass Astronomical Instrument

5616 × 3744

engraved sundial with gnomon

1600 × 1200

Compass on Old Map — Brown, Historical, Photograph, Figure

1920 × 1200

gold hourglass in frame

1024 × 1536

sand clock with hour numbers

1600 × 1000

Antique brass astronomical instrument

1000 × 1802

Prague Astronomical Clock

1920 × 1080

Antique brass surveying instrument

1680 × 1050

Compass on a map

1680 × 1050

open brass compass on white

3008 × 2000

Compass on old map

1200 × 800