[SOLVED] An old surveyor’s plumb bob?
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  1. #1
    us
    May 2020
    Rochester NY
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    An old surveyor’s plumb bob?

    I thought this might be an old surveyor’s plumb bob? Found in a farm field with a history going back to the late 1790’s in Western New York State
    I think it it made of bronze - maybe brass...

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    Last edited by dagwood67; Sep 11, 2020 at 05:55 PM.

  2. #2
    us
    steve andermatt

    Apr 2013
    California
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    can you show a picture of the bottom side?
    AARC, Icewing, Tony in SC and 3 others like this.
    back of the boat

  3. #3
    Charter Member
    us
    Jun 2006
    Upstate South Carolina
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    Looks like part of a cut off valve of sorts?
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  4. #4
    us
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    Every plum bob I have ever seen comes to a fine point.

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  5. #5
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    steve andermatt

    Apr 2013
    California
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    I was thinking a gas valve shutoff, it would be brass so no sparks.
    Last edited by Back-of-the-boat; Sep 11, 2020 at 09:43 PM.
    Tony in SC and dagwood67 like this.
    back of the boat

  6. #6
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    Digging in the dirt & scooping in the water!
    not a plum bob - not sure what else,,,,,
    dagwood67 likes this.
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  7. #7
    us
    May 2011
    tujunga ca
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    more pictures please,is it one piece or two?
    brad
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  8. #8
    us
    Oct 2006
    Herndon Virginia
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    Clock weight.
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  9. #9

    Sep 2014
    Midwest, North of 36°60'
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    Quote Originally Posted by Charlie P. (NY) View Post
    Every plum bob I have ever seen comes to a fine point?
    Most do, but not all. When plumbing concrete wall forms we used to use almost anything dense and heavy for a bob. You don't need a point on the floor to plumb a wall, just a straight string line between top and bottom.

    Also, when a dude leapt off the Hoan Bridge construction we used a five gallon bucket full of rocks, strung it down to the water from where we thought the dude jumped, and it gave the divers a hint as to the location of the body.

    The o.p. does not look like a plumb bob. DCMatt's suggestion is very plausible. If it is a clock weight there might have been a top with a hole for a finish trim over the square top. You might want to check around were you found the peice for a second piece.
    Last edited by Duckshot; Sep 12, 2020 at 09:32 AM.
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  10. #10
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    Quote Originally Posted by Duckshot View Post
    Most do, but not all. When plumbing concrete wall forms we used to use almost anything dense and heavy for a bob. You don't need a point on the floor to plumb a wall, just a straight string line between top and bottom.

    Also, when a dude leapt off the Hoan Bridge construction we used a five gallon bucket full of rocks, strung it down to the water from where we thought the dude jumped, and it gave the divers a hint as to the location of the body.

    The o.p. does not look like a plumb bob. DCMatt's suggestion is very plausible. If it is a clock weight there might have been a top with a hole for a finish trim over the square top. You might want to check around were you found the peice for a second piece.
    I think he's trying to find out what it was originally, not what it may have been repurposed for. In your example, we wouldn't say your bucket is a plumb bob, even though that may be one of the ways it was used. It is a bucket, plain and simple.
    dagwood67 likes this.
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  11. #11

    Apr 2007
    Clearwater, FL
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    looks tapered
    can wee see the bottom
    pretty sure its the business end of a brass shut off valve, tapered for seating sealing purposes
    groove is for o ring, designed to rotate to turn when the square nut is rotated half turn
    this broken part is the result of a seized shut off valve
    brass is used in both water and gas, it wont rust or corrode
    brady

  12. #12

    Apr 2007
    Clearwater, FL
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    looks tapered<br>can wee see the bottom<br>pretty sure its the business end of a brass shut off valve, tapered for seating sealing purposes<br>groove is for o ring, designed to&nbsp; rotate to turn when the square nut is rotated half turn<br>this broken part is the result of a seized shut off valve<br>brass is used in both water and gas, it wont rust or corrode<br>brady
    dagwood67 likes this.

  13. #13
    us
    May 2020
    Rochester NY
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    Thanks all! Great info! The bottom is actually broken off so this is just the top half
    It is tapered
    The shut off valve makes the most sense!
    Thanks!
    Back-of-the-boat likes this.

  14. #14
    us
    Mar 2012
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    Got to agree with Tony. Looks like a pit mounted gas or water shut off valve. Does the bottom look twisted off?
    Tony in SC likes this.

  15. #15

    Aug 2014
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    Remember hopping over fire hydrants as a kid ?
    The hydrant companies would use things of this nature both as an incentive to excel and a reminder should you forget.

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