Wednesday 4 March 2015

Red Blobs

While out walkies I noticed two sets of three red blobs on the footpath. Both sets have what looks like the top of a metal spike at the centre:

DSCN3928

I would guess these have something to do with surveying. Centre mark for a theodolite or more probably nowadays a GPS receiver, but the puzzle is what is being surveyed and why?
I tried some searches on Google, even uploaded the photo, but nothing the same was found.

8 comments:

  1. Replies
    1. TWG: funny, that though also sprang to mind here ;)

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  2. I think that pin indicates a fixed level, if my memories of working for my stepfather aren't faulty

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  3. Showed it to my stepdad, it is a station for a theodolite!

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    Replies
    1. Thanks for that Simon. With the three dots I thought of a tripod though they seemed very close together. The red is presumably just a representation. They are too large to indicate an accurate position, unlike the metal pin.

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  4. Yes they are called Survey Control Stations John which can be either temporary or permanent. The paint must be biodegradable and the nails are stainless steel.
    I looked it up otherwise I wouldn't have a clue.{:))

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    Replies
    1. Thanks Roy. I saw a couple of men working with some equipment right next to the church so I wonder what they are surveying.

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  5. Yes they are survey points the ones I've seen have a washer under the pin head.

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Thank you for visiting. Hope you enjoyed the pictures. Any comment, or correction to any information or identification I get wrong, is most welcome. John

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