Land surveys consist of six basic tasks: Determinizing your position on Earth using celestial navigation methods Measuring distances with a Gunter’s Chain. Measuring changes in elevation with a Range Pole Measurement of directions and angles using a Compass. Drawing the map on a Plane Table, and Computing areas with basic plane geometry In this series …
Continue reading “How to Survey Land with 18th Century Tools – Measuring Lines”
Land surveys consist of six basic tasks: Determinizing your position on Earth using celestial navigation methods Measuring distances with a Gunter’s Chain. Measuring changes in elevation with a Range Pole Measurement of directions and angles using a Compass. Drawing the map on a Plane Table, and Computing areas with basic plane geometry In this series …
Continue reading “How to Survey Land with 18th Century Tools – The Tools”
The most enduring picture of Englishmen coming ashore in North America is the settlers of the Plymouth Colony. They did not come ashore where they had intended (Virginia) and they were not prepared for landfall in the harsh New England climate. Their choice of landfall was not by choice, but based upon the Mayflower’s dwindling …
Continue reading “The Economics of Brewing in Colonial America”
Much of what you read about celestial navigation is focused on ocean navigation where you have a reasonably unrestricted line of sight to the horizon. Terrestial navigators and surveyors often do not have this and must make adjustments in their technique. One very common approach is to use an ARTIFICIAL HORIZON. An “artificial horizon” is …
A sextant is an intimidating complex instrument. It consists of an A-shaped frame with an apex of 60° on a sextant or 45° on an octant. Along the rounded lower edge of the frame is an arc, the limb, that is marked with numbers for the degree of the angles that the sextant can measure. An index …
Continue reading “Colonial Surveyor – Determining your Position using Celestial Navigation”
Navigating from point to point is a relatively simple task for most surveyors or mariners. You establish a compass bearing from where you are to your intended location then measure out the distance (or in the case of sailing a speed and a time) to the new location giving what we call today a vector. …
Continue reading “Vector Computations without the Benefit of Modern Trigonometry”
The first surveyors in America arrived with the Jamestown Company in 1621. Given the goal of quickly settling Virginia and the vagaries of Royal Charters for Maryland, Virginia, and the Carolina colonies, surveyors were critical to establishing order in the colonies. The role of the surveyor was to transfer land from the crown to private …
Land surveys consist of six basic tasks: Determinizing your position on Earth using celestial navigation methods Measuring distances with a Gunter’s Chain. Measuring changes in elevation with a Range Pole Measurement of directions and angles using a Compass. Drawing the map on a Plane Table, and Computing areas with basic plane geometry In this series …
Continue reading “How to Survey Land with 18th Century Tools – Measuring Lines”
The most enduring picture of Englishmen coming ashore in North America is the settlers of the Plymouth Colony. They did not come ashore where they had intended (Virginia) and they were not prepared for landfall in the harsh New England climate. Their choice of landfall was not by choice, but based upon the Mayflower’s dwindling …
Continue reading “The Economics of Brewing in Colonial America”
Land surveys consist of six basic tasks: Determinizing your position on Earth using celestial navigation methods Measuring distances with a Gunter’s Chain. Measuring changes in elevation with a Range Pole Measurement of directions and angles using a Compass. Drawing the map on a Plane Table, and Computing areas with basic plane geometry In this series …
Continue reading “How to Survey Land with 18th Century Tools – The Tools”
Michael Carver -- Historical Interpreter/Reenactor 