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A man`s hand holding on a blue string, established by the use of a plumb bob or plummet, used as a vertical reference line for Royalty Free Stock Photo
A man`s hand holding on a blue string, established by the use of a plumb bob or plummet, used as a vertical reference line for Royalty Free Stock Photo
   
   
   
   
   
A man`s hand holding on a blue string, established by the use of a plumb bob or plummet, used as a vertical reference line for
   
   
   
   
   
   
   
A man`s hand holding on a blue string, established by the use of a plumb bob or plummet, used as a vertical reference line for wall in construction.

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