referred device intended to allow the practice of the firing is the arc to the blind and visually impaired

摘要

The invention comprises a fixed part and a detachable part. The fixed part is constituted by a symmetrical base whose axial part 1 carrying the adjustable extension checking system 9 and the transverse part 3 are isolated from the ground by three non-skid jacks 4 providing it with stability and horizontality, checked by a hemispherical bubble level 8 and a support arm with a rack 15, in the vertical column 16 of which the detachable part 18, constituting the sight engages which can be accurately adjusted vertically by its vertical section 19 and laterally by its horizontal section 31, at the end of which is found the forward mark or pointer 21, unable to serve as a support (shock-absorbing mounting with a spring 33 in the preferred embodiment or with a magnetic block 42 in a possible variant). IMAGE