levelling
angle
builder
caucasian
day
device
engineer
engineering equipment
equipment
exact
examining
field
grass
green color
ground
hardhat
helmet
holding
house
inspection
instrument
instrument of measurement
level measurement tool
male
man
measurement
men at work
mensuration
mobile
nature
optical
optical level
outside
person
professional
site
survey
surveyor
tachometer
telescope
tripod
worker