Say what you will about the past few years, it has produced some useful tools for the surveyor. First, LiDAR technology made it possible to collect high-density 3D data with spectacular speed, so that ...

TN a general text on surveying, as is pointed out by the author of one of these books, there is little room for originality except in treatment. Regarded as a branch of mathematics or as a ...

The Zero Stone is a mark of great triangulation of Survey of India. This triangulation is a modern surveying technique introduced in India by Britishers George Everest, Campbell, and an Indian Nayan ...

On a glorious sunny June day we reached the summit of Céidín, south of the Glen of Imall, to find a triangulation station or trig pillar. These concrete pillars are found on many prominent peaks ...

A box, room, or device (a darkened enclosure) that has a small hole (an aperture, maybe with a lens) through which light from external objects enters to produce an image on an opposite surface is ...