adult
architect
asian
background
builder
building
business
caucasian
chinese
construction
contractor
design
engineer
engineering
hand
hardhat
helmet
holding
industrial
industry
instrument
isolated
japanese
korean
male
man
manual
measure
measurement
measuring
men
meter
one
people
person
portrait
professional
project
site
studio
suit
tape
thai
tool
white
work
worker
working
yellow
young