Abstract: 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.

Abstract: A hand held measuring device for measuring the size of small objects such as nuts, bolts, and the like. The device includes both an English measuring scale and a Metric measuring scale and may be used to gauge the size of either a Metric or an English standard bolt.The device employs two pivotally attached plate-like elements, each plate-like element having a pincer element. Each pincer element has a contact point. The contact points of each pincer element cooperate to define the reference points for measurement. Further, the device includes a Metric and an English graduated scale and an indicating mechanism associated with each graduated scale.An object is measured by adjusting the distance between the contact points until the distance mirrors the overall dimension of the object. The graduated scale and corresponding indicating mechanism cooperate with the contact points to define the dimension of the object.