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US 4,745,685 AGranted
Movable jaw measuring apparatus
OwnerDavid D. Castilloinventor
Life of this patent
Estimating the term…
Abstract
Movable jaw measuring apparatus usable for measuring widths across the flats of bolts includes a fixed jaw and a movable jaw, and reference marks for indicating the measurements may be in both inch and metric units. The movable jaws can also be used to measure the diameter of the bolts. Apparatus includes linear measurement indicia for measuring the length of various elements, also in both inch and metric units, if desired. Peripheral surfaces may include serrations for measuring the pitch of threads, or thread measuring indicia may be printed on surfaces.
Claims12
Movable jaw measuring apparatus for measuring nuts and bolts, comprising, in combination:
- plate means, including
- a relatively flat portion,
- a straight edge on the relatively flat portion,
- first measuring indicia along the straight edge,
- a thread edge, and
- thread measuring means along the thread edge for measuring the pitch of threads;
- fixed jaw means secured to the plate means, including
- a first inside jaw face,
- a first bottom jaw edge, and
- second measuring indicia adjacent to the first bottom jaw edge;
- and
- movable jaw means movably secured to the plate means, including a second inside jaw face disposed substantially parallel to the first inside jaw face and movable along the second measuring indicia to measure elements placed between the first and second inside jaw faces.
9 more elements
Dependencies are inferred from the claim text.