A collapsible trestle comprises a seating part (13) which is supported by two legs (11, 12). The end of one leg (11) remote from the seating part (13) is so attached to a base plate (10), intended for abutment with the foundation surface on which the trestle rests, as to be pivotable about a first axis (16) which extends substantially parallel with the plane of the base plate. The end of the other leg (12) remote from the seating part can be detachably connected to a fitting (17) mounted on the base plate at a distance from the point of attachment of the aforementioned one leg. The seating part (13) can also be swung relative to the base plate about a second axis (15) which extends substantially parallel with the longitudinal axis of the one leg (11).
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