Patent ID: 9494407
Filing Date: 2016-11-15
CPC Classification: G01B

Claim Text:
1. A trip hazard measurement gauge comprising: an outer tube; a stationary foot orthogonally secured to a lower end of the outer tube; an inner tube slidable within the outer tube and extending through an upper end of the outer tube; a slidable foot orthogonally secured to a lower end of the inner tube; and at least one ruler secured to an upper end of the inner tube, said ruler having a measurement reading of zero distance when the stationary foot and the slidable foot are at the same level, said measurement reading increasing linearly as the slidable foot is moved upwardly with respect to the stationary foot; wherein a difference in elevation between two adjacent concrete slabs is measured by placing the slidable foot on an adjoining edge of the uppermost slab and pushing down on the outer tube until the stationary foot contacts the lowermost slab.