Dutch Hill Tribrach with Optical Plummet
$140.00
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Dutch Hill Tribrach with Optical Plummet This is an attachment plate used to attach a surveying instrument to a tripod. A tribrach allows the survey instrument to be repeatedly placed in the same position over a surveying marker point with sub-millimetre precision, by loosening and re-tightening a lock to adjust the instrument base in a horizontal plane.
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