def set_tol(value=1e-05):
    """Set Error Tolerance
    
    Set the tolerance for detriming if two numbers are simliar, i.e
    :math:`\\left|\\frac{a}{b}\\right| = 1 \\pm tolerance`
    
    Parameters
    ----------
    value: float
        The Value to set the tolerance to show be very small as it respresents the
        percentage of acceptable error in detriming if two values are the same.
    """
    global _tol
    if isinstance(value, float):
        _tol = value
    else:
        raise TypeError(type(value))
