To confirm an operating condition or a malfunction of the interior of the driving portion of a lift for a hairdressing and barbering chair and confirm an accumulation of fallen hairs or the like.

A lift is made up of a foundation 1, a raising and lowering driving section consisting of a motor 4, an oil tank (not illustrated) and a cylinder 5 or the like provided in the foundation 1, a raising and lowering link 7 raising and lowering a chair seat A by the raising and lowering driving section, a cover 6 covering the raising and lowering driving section and made of a transparent member in which a lead-out opening of the lifting link 7 is formed.