architect
building
checking
concrete
construction
copy space
darkness
development
digital
dot
engineering
equipment
examination
eye
geology
ground
horizontal
industry
inspection
instrument
laser
level
light
measurement
metro
optical
points
precision
railway
red
road
rock
safety
site
station
subway
survey
surveyor
technology
thailand
theodolite
tool
topographic
total
transit
tripod
tunnel
underground
work
workplace
定額
Theodolite at underground railway tunnel construction work. Construction survey equipment instrument on concrete circular tunnel background.の素材 [FY310167379680]
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