dogears

and bookmarks…

pic: WorldMegan

Trig Points Ireland

It is usually a hand-cast concrete pillar, 4 feet high and 2 feet square at the base, tapering towards a flat top. It is part of a network of surveying stations that were used by Ordance Survey for mapping. Each pillar is in view of several others so that their position may be triangulated.


Flowingdata

FlowingData explores how statisticians, designers, data scientists, and others use analysis, visualization, and exploration to understand data and ourselves.