Micrometer caliper attachment

Claim 1

IN COMBINATION WITH A MICROMETER BARREL ASSEMBLY INCLUDING A SPINDLE, A MICROMETER ATTACHMENT COMPRISING AN ELONGATED SUPPORT MEMBER, MOUNTING MEANS MOUNTED ON SAID SUPPORT MEMBER FOR LONGITUDINAL ADJUSTMENT THEREALONG, A LATERAL MOUNTING BOSS ON SAID MOUNTING MEANS PROJECTING IN A FIRST DIRECTION FROM THE MOUNTING MEANS, AN ELONGATED LATERALLY PROJECTING MOUNT PORTION ON SAID MOUNTING MEANS EXTENDING IN A SECOND DIRECTION OPPOSITE FROM SAID FIRST DIRECTION AND FROM THE OPPOSITE SIDE OF THE MOUNTING MEANS, SAID MOUNT PORTION BEING IN A PLANE SPACED FROM THE PLANE OF SAID MOUNTING BOSS, LATERALLY PROJECTING FIRST ARM MEANS FIXEDLY CARRIED BY ONE END OF SAID SUPPORT MEMBER AND EXTENDING IN SAID FIRST DIRECTION, SECOND LATERALLY PROJECTING ARM MEANS PIVOTALLY CONNECTED AT ONE END TO THE OUTER END OF SAID MOUNT PORTION, SAID SECOND ARM MEANS EXTENDING IN SAID FIRST DIRECTION FROM THE POINT OF PIVOTAL CONNECTION PAST A POINT IN LONGITUDINAL ALIGNMENT WITH THE MOUNTING BOSS, SAID MICROMETER BARREL ASSEMBLY BEING MOUNTED IN THE MOUNTING BOSS SO AS TO EXTEND SUBSTANTIALLY PARALLEL TO THE SUPPORT MEMBER WITH THE MICROMETER SPINDLE BEING DISPOSED FOR FREE ABUTTING ENGAGEMENT WITH THE SECOND ARM MEANS UPON EXTENSION OF THE SPINDLE, AND COMPRESSION SPRING MEANS ENGAGED BETWEEN THE MOUNT PORTION AND THE SECOND ARM MEANS AT A POINT BETWEEN THE POINT OF PIVOTAL CONNECTION AND THE MOUNTING MEANS SO AS TO RESILIENTLY URGE THE SECOND ARM MEANS TOWARD THE SPINDLE.