A History of Surveying Most images have been provided by Ken Allred, ALS, CLS and Patrick Ringwood, BCLS, CLS

From Eratosthenes to GPS A History of Surveying Eratosthenes 276 B.C.

3800 BC The oldest known topographic map on a clay tablet of a northern part of Mesopotamia

Cadastral Plan - Mesopatamia BC

I lifted up mine eyes again, and looked, and behold a man with a measuring line in his hand. Zechariah 2:1

The Rope Stretchers

Pythagoras The Pyramids Early cadastral records to 3400 BC Early Egyptian Civilization Flooding of the Nile

Ancient Boundary Stone

1 st Century – 11 th Century AD – Compass developed Chinese invention - south pointing spoon (lodestone) used as a divining tool in the practice of feng shui magnetized needles used as direction pointers in the 8th century AD in China ca. 850 and 1050 common as marine navigational aids

Gerard Mercator - c. 1550

1571 Leonard Digges Invented the Theodolite - England

The Sextant 1730

Early explorers Samuel de Champlain Peter Fidler David Thompson Captain James Cook

Samuel de Champlain 1608

Philip Turnor & Peter Fidler Lake Athabasca From the book: Canada’s Forgotten Surveyor by Peter Fidler

David Thompson Columbia River 1806

Peter Fidler Elk Point, Alberta From the ALS News Magazine

Surveyors and Statesmen Three Surveyors and another guy! Mount Rushmore

George Washington Surveyor

Essential for settlement Early land information system From an ALSA Brochure

Technological Revolution 1950’s - Geodimeter – Tellurometer 1970’s - Desk Top Computer – Total Stations 1990’s - Geographic Information Systems 1990’s - Satellite Positioning Systems 2000’s – High Resolution Imagery

Global Positioning Systems Selective Availability Turned off in 2000