Patent ID: 11970865
Assignee: CB INTERESTS INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. A jig for constructing a staircase having a plurality of treads, each tread having a predetermined run and a selected rise, the jig comprising:
a first component; and
a second component movably coupled to the first component, each of the first component and the second component having at least one scale thereon, each scale having a set of markings, each marking of each set of markings representing a different potential rise of each tread of the staircase,
the jig having a first position where:
an edge of one of the first component and the second component of the jig identifies a position of a cut line on a stair stringer of the staircase, the cut line identifying a bottom of the stringer that engages the ground, when:
the jig is at a first position resting on the stair stringer;
the first component and the second component are coupled to each other; and
one of the first component and the second component has an indicator pointing to a marking of a first scale of the other component, the marking indicating the selected rise of each tread of the stair stringer of the staircase.