folding leaf spring

folding sight leaf

leaf spring

circular leaf spring

rear-sight leaf spring

rebound leaf of the spring

back-sight leaf

clover-leaf crossing

clover-leaf layout

rear-sight leaf

fire leaf

belt feed pawl spring / belt-feed pawl spring

belt feed lever pivot spring / belt-feed lever pivot spring

folding knife

folding portable bridge

folding-fin aircraft rocket (FFAR)

folding bipod

folding leg

folding screw adjustment rear sight

folding shield

folding trigger

folding stock (folded stock)

folding-stock anchor

side-folding stock

under-folding stock

folding ladder

folding strut

folding step

folding-rotor convertiplane

folding

back-folding

folding propeller

adjustable metallic folding blade sight assembly