def cm2inch(*tupl, scale=3):
    """
    Convert cm to inch and scale it up.
    
    Parameters:
    *tupl: *tuple(floats)
        Measures in cm to convert and scale.
    scale: float
        Scale factor. Default: 3
    """
    inch = 2.54
    if isinstance(tupl[0], tuple):
        return tuple(scale * i/inch for i in tupl[0])
    else:
        return tuple(scale * i/inch for i in tupl)