Abstract: A tiltable table having a top plate tiltably mounted on a frame. The tiltable table comprises an air spring disposed between the frame and the top plate and having a cylinder pivoted at its one end to the frame, a piston rod pivoted at its outer end to the rear side of the top plate and a release pin projecting from the piston rod outer end, the piston rod being holdable as projected by a desired length by the air spring; a pushing plate movable toward and away from the release pin of the air spring; a lever pivoted to the top plate at the free end thereof; and release structure attached at its one end to the base end of the lever and at the other end thereof to the pushing plate for pressing the pushing plate into contact with the release pin of the air spring when the lever is pivotally moved to thereby release the piston rod from the holding action of the air spring.