The tower of the church marks the centre of the city; surveyors used it as a platform to measure distances to other locations.

Randy's not so sure about the sextants that the Nipponese surveyors presumably used during the war.

"I guess the surveyors must have used it," remarked Rex.

This is because the surveyor uses the physical structure (floors, walls and ceilings) to define the boundaries of the lots.

In the United States, surveyors and civil engineers use units of feet wherein a survey foot is broken down into 10ths and 100ths.

In order to find the information they need, surveyors use geometry, engineering, trigonometry, mathematics, physics, and law.

American surveyors use a decimal-based system of measurement devised by Edmund Gunter in 1620.

For these reasons, many surveyors use geomagnetic alerts and predictions to schedule their mapping activities.

They used the knots the same way early American surveyors used the chaining pins, to keep track of the distance.

Archaeologists dug up the back garden, while surveyors used infra-red beams to create a three-dimensional map of the area.