機器
aluminum
board
carriage
chain
cog
construction
dirty
drill
empty
engineering
equipment
factory
grain
grunge
hardware
industrial
industry
iron
lathe
machinery
manufacture
manufacturing
mechanic
metal
mill
milling
obsolete
old
plant
precision
processing
production
repair
restoration
retro
shop
stainless
steel
store
technology
tool
turning
vertical
vintage