cad
circle
cogwheel
component
concept
connected
construction
cooperating
correspond
design
detail
device
drafting
draw
drawing
element
engine
engineering
equipment
gearing
graphic
idea
industrial
interlock
join
machinery
mechanical
mechanism
metal
moving
office
paper
pattern
pencil
precision
project
ratchet
simultaneous
sketch
socket
sprocket
structure
synchronized
table
technical
technology
tool
wheel
wrench