the invention relates to a template 1 for a brillenglas 4. the stencil has holes 14, the aimed position of a borehole or the like to affix or markings.$a, it is proposed that the template 1 with the brillenglas 4 attached blocker 10, 11 to the unverschiebbar and drehfest doors, so that the position of the hole or the marker relative to the brillenglas 4 (fig. 6).
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