| 摘要 |
A size adaptive base for holding micrometers used in measuring screw threads modifies the vice jaw section of the base pedestal unit of the thread measuring apparatus to accommodate a variety of micrometer sizes. The pedestal includes a two-part vice with separate jaw. The resting ledge for the micrometer frame edge is placed on the pedestal to accommodate a 2″-3″ micrometer, the largest of the three sizes. The jaw with clamping screw locks the micrometer at the proper angle and position with the anvil over the well center. For the two smaller micrometers, an insert spacer is used between the pedestal ledge and the edge of the micrometer frame to lift up these smaller instruments at the proper position with the anvil at the well center. The same separate locking jaw is sized to accommodate all three sizes of micrometer. |
