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Difference between Subsurface Magnetic Locator & Metal Detector

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land_severer
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Hi all,

I'm thinking of purchasing a Magnetic locator to help locate Rebar placed at Boundary corners (which is typical in our jurisdiction)

I observe that there is a significant disparity in cost between the Magnetic Locator vs the Metal detector.

I'd like to know if anyone has used the latter in surveying. Is there a significant difference in performance where our field is concerned?

Would you recommend using a metal detector?

?ÿ

Thanks in advance


 
Posted : February 18, 2021 2:06 pm
john-putnam
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Pin finders are designed to look primarily for vertical ferrous objects.?ÿ Your average metal detector is not.


 
Posted : February 18, 2021 3:09 pm
nate-the-surveyor
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We are surveyors. We tend to be stuck in our own zone. I bought one of those 20$ pin pointers. (Type metal detector pin pointer) on eBay. They are very compact and worth 20$. If you need to find a rebar 2ƒ?? subsurface itƒ??s not enough. But, 90% of stuff is not that deep.?ÿ
shonstedt 52 series is kinda the industry standard. In my opinion.?ÿ
Nate


 
Posted : February 18, 2021 3:49 pm
land_severer
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@nate-the-surveyor

Thanks for the info. Most of my pins are found beneath brush or maybe under 1"-6".

Do you think a $20 pin pointer would be useful in such a scenario?


 
Posted : February 18, 2021 8:50 pm
nate-the-surveyor
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Adrian,

its 20$. Itƒ??s not going to take the place of a professional $800 detector. But,if you need to find 5-6 pins, and know where to search, it can be useful. On the 20$ one, stick a bunch of things in the ground, and test it.?ÿ
16d

20d

40d

3/8 rebar

1/2 rebar.?ÿ
it can be useful. But it will never replace a big one.?ÿ
N


 
Posted : February 18, 2021 9:00 pm

nettronic
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@nate-the-surveyor

?ÿ

Their Maggie IMHO is crap. My coworker likes to call it the "offset edition".?ÿ The 52s are good, but I loved my CST Berger MT200 stick. 3' deep no sweat. On level 3 I could find non ferrous concrete markers and one level one could differentiate a rebar next to a chain link fence. Nice stuff.


 
Posted : February 18, 2021 11:02 pm