abstract
binding
cad
circle
closeup
cogwheel
component
cutout
design
detail
diagram
disk
document
drafting
drawing
driving
education
element
engineering
fastening
fragment
frame
gear
geometry
graphic
hand
hole
industrial
measuring instrument
mechanical
metal
metallic
nobody
paper
pattern
pencil
pinion
plan
pointer
precision
production
set
sketch
steel
technical
technology
teeth
tool
toothed
wheel