Mapping & Earth Observation · Recorded milestone

Stereo plotting machine

Recorded year1909

Eduard von Orel's stereoautograph, built by Zeiss, lets a draughtsman trace contour lines straight from paired photos, the start of photogrammetric map making.

Explore this milestone on the interactive map

Built on

Snapshot box cameraRecorded · 1900enables

Led to

Trench maps from aerial photosRecorded · 1915enables
Drone mapping kitRecorded · 2012enables

Sources & evidence

Additional source

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.