def convert_pt_to_in(pts: int) -> float:
    """Converts a length in pts to a length in inches.

    Parameters
    ----------
    pts : int
        A length in pts.

    Returns
    -------
    float
        A length in inches.

    References
    ----------
    - https://www.overleaf.com/learn/latex/Lengths_in_LaTeX
    """
    return 12.0 * 249.0 / 250.0 / 864.0 * pts