| 摘要 |
A construction hole alignment device includes a tapered body having a smaller diameter first end, a larger diameter second end, and a series of stepped sections having progressively larger diameters extending between the first and second ends. The body has a central axis extending between the first and second ends, and the first end of the body includes a center aligned with the central axis. Each of the stepped sections has an annular outer wall. The tapered body includes flanges extending outwardly from the central axis for interconnecting adjacent stepped sections. The tapered body is insertable into a first construction hole until the outer diameter of one of the stepped sections matches the inner diameter of the first construction hole, whereby the center at the first end of the inserted body defines a target location for a second construction hole on a second floor.
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