| 摘要 |
A gage for measuring and displaying the dimensional distance across the flats of a hex head of a hex head fastener having a rotatable handle attached through a shaft to a gear. The gear engages racks of a movable jaw having faces which engage the flats of the hex head. The distance between the faces of the movable jaws when engaging a hex head is displayed through a window provided through the rotatable handle. The display contains interspersed metric and English units.
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