Black metal height bolt with the number 920-1 in the concrete of a bridge pier for measuring heights

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Size: 3953px × 2500px
Location: germany
Photo credit: © Frank Heinz / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: attach, bolt, bore, bridge, calibrate, checking, concrete, exact, firm, geodesist, grey, hard, height, instrument, instruments, job, level, levelling, measure, measuring, pier, pillar, professional, quantity, staff, support, surveying, surveyor, tools, trigonometry, wall