Why south? Any idea to the history of this?

Actually the opposite, every cadastral survey here must be tied to an official datum. But we recognise that the earth is not fixed, that things mov...

The best method I know to check and adjust a pole bubble is to use a doorway. Make a mark on the lintel. Transfer this mark to the floorplate with ...

@murphy Living in southern New Zealand I have some personal experience in this matter. We tried what you are suggesting, and it does not work in the...

@williwaw New Zealand gets around this by having wooden boundary pegs and iron reference marks. If using a nail it has to be clearly labelled if it is...

@surveylife Dont look at New Zealand or Australia. Average survey tech wages downunder are less than 6 figures, with median house prices around 750k a...

@dave-o Your workflow is sound. A single point calibration plus at least one check is a good way to get your numbers to match published numbers, parti...

@dave-o you should be able to move the base point and then recompute - if your topo observations are held as offsets to the base (that's the usual) th...

@lurker 404 - Your link is broken. Tryinstead Looks like Google is getting ever worse - it served me up v1.3 of the docs Can anyone confirm if it ...

Had a quick look at the Swmaps documentation. I can find no references to spheroids, geoids, projections or coordinate systems It would appear to ...

tree fell on it?

I would start by running a good static survey over those three marks you do have Then compare your numbers with the 'official' That should tell y...

Mostly, but not 100% correct. Consider a projection with a scale factor other than 1

@mathteacher Typical <expletive deleted> AI answer - nearly, but not quite right Designed for conventional instrument work, by default Acces...

@meh We Kiwis like having at least 2000km between us and the Australians...

Doesn't help when you are willfully blind and deliberately use an over-simplified earth model from the get-go - Google we're looking at you...