Abstract: Adjustment device for a support arm system, support arm system includes a support arm for holding an object, a hinge part having a receiving portion for securing the support arm, and the hinge part being rotatably mounted on a hinge retainer. Support arm is securable with an end face to the hinge part, and a deployment angle of the support arm being adjustable using adjustment device which is formed from a wedge-shaped adjustment head that interacts with a slide incline of the hinge part and the end face of the support arm. Adjustment head includes a wedge surface and a pressure surface that lies opposite wedge surface, and adjustment head is adjustable such that the wedge surface slides along on the slide incline and pressure surface therefore pressing against end face of the support arm such that the deployment angle of the support arm can be adjusted.

Abstract: A housing, especially for accommodating electrical and electronic components, comprising a lower portion, a cover adapted to be secured to the lower portion, and a holding element adapted to be mounted on a planar surface. The lower portion, along with the cover secured thereto, is adapted to be releasably arrested on the holding element, under spring tension.