In total, there are seven in Glasgow, usually placed on or near hill tops, and many more in the surrounding countryside, so if you're looking for something to do with the kids in the summer holidays, maybe bagging a trig point or two might be just the thing to keep them occupied for a few hours here and there.

#glasgow #trigpoint
#trigpillar
#trigpillarbagging #maryhillpark

From each of the more than 6,000 trig points across the UK, you can see at least two others, and by using trigonometry (which trig is short for), you can accurately map the entire country. There's also a hobby of trig pillar bagging associated them, where people try to visit as many of then as possible.

Cont./

#glasgow #trigpoint
#trigpillar
#trigpillarbagging #maryhillpark

If you spend time wandering around the UK, you will undoubtely have come across a concrete strucure like this one in Maryhill Park in Glasgow. They are trig pillars, and they were first used to map Britain in 1936. Trig pillars are set at known locations and at known altitude, and have a brass fitting ln the top (called a spider) to hold a theodolite or other mapping equipment.

Cont./

#glasgow #trigpoint
#trigpillar
#trigpillarbagging #maryhillpark