Abstract: The suspension (1) permits of the almost frictionless swinging into equilibrium position of an instrument (53) fastened to an instrument holder (5). For the balancing of the weight or the swinging into the position of equilibrium, the spherical end (7) of the instrument holder (5) is raised. In the raised position, there is an approximately punctiform resting surface between the holding part (3), the suspension (1), and the instrument holder (5). After the instrument has swung into the equilibrium position, the spherical end (7) of the instrument holder (5) can be held clamped fast over a large surface by turning the shaft (19) which has eccentric disks (25).

Abstract: A rifle having a telescopic sight has apparatus for recording the target as seen through the telescopic sight at the instant the trigger is pulled. The apparatus includes a beam splitter for directing to a camera some of the light passing through the telescopic sight. The shutter mechanism of the camera is coupled to the rifle trigger so that the camera will "shoot" the picture of the target when the trigger is pulled. The camera is of the instant-copy type so that pictures of the target can be viewed shortly after "shooting". The apparatus thus enables the ability of a rifleman to be tested without the need for firing live ammunition.