Microscope with adjustable aiming reticle for alignment with tool member

Claim 1

FOR AN ASSEMBLY APPARATUS ADAPTED TO PERFORM PRECISE OPERATIONS WITH A TOOL STATIONARILY ASSOCIATED WITH A MICROSCOPE WHICH HAS TUBULAR AIMING MEANS ON ITS OPTICAL AXIS AND IS USED TO AIM THE TOOL AT A WORK PIECE, THE IMPROVEMENT INCLUDING THE COMBINATION FOR ADJUSTING THE AIMING MEANS TO ACCURATELY AIM THE TOOL, A TUBULAR EYEPIECE MEMBER SURROUNDING THE AIMING MEANS AND HAVING A GREATER INSIDE DIAMETER THAN THE AIMING MEANS OUTER DIAMETER AND THE OPTICAL AXIS EXTENDING AXIALLY THROUGH SAID MEMBER AND HAVING A PAIR OF SPACED APART APERTURES AND ONE OF SAID APERTURES BEING A CIRCUMFERENTIALLY EXTENDING SLOT IN SAID MEMBER WITH BOTH APERTURES LYING IN ONE PLANE PERPENDICULAR TO SAID OPTICAL AXIS, ANNULAR HOLDING MEANS INCLUDING A RESILIENT RING IN SAID MEMBER FOR RELEASABLY HOLDING THE AIMING MEANS PERMITTING ACCURATE AND INCREMENTAL, RADIAL AND CIRCUMFERENTIAL, PIVOTAL AND SLIDING MOVEMENTS LATERAL TO SAID AXIS OF THE AIMING MEANS WITHIN SAID MEMBER AND BEING OPEN ALONG THE OPTICAL AXIS TO PERMIT AIMING THERETHROUGH AND MAINTAINING THE AIMING MEANS IN A PLANE PARALLEL TO THE PLANE OF SAID APERTURES, AND A PAIR OF RADIALLY OUTWARDLY EXTENDING ARMS FIXEDLY MOUNTED ON SAID AIMING MEANS AND RESPECTIVELY EXTENDING THROUGH SAID APERTURES TO THE OUTSIDE OF SAID TUBULAR MEMBER, THE AIM EXTENDING THROUGH SAID ONE APERTURE BEING PROVIDED WITH A MANIPULATING MEANS SUCH THAT WHEN SAID ONE ARM MOVES THERE ARE CORRESPONDING MOVEMENTS IMPARTED TO SAID AIMING MEANS.