code: def altimeter(alt: Number, unit: str = 'hPa') -> str:
      
      if not (alt and unit in ('hPa', 'inHg')):
          return ''
      if unit == 'hPa':
          value = alt.repr
          converted = alt.value / 33.8638866667
          converted = str(round(converted, 2)) + ' inHg'  # type: ignore
      elif unit == 'inHg':
          value = alt.repr[:2] + '.' + alt.repr[2:]
          converted = float(value) * 33.8638866667
          converted = str(int(round(converted))) + ' hPa'  # type: ignore
      return f'{value} {unit} ({converted})'
docs: Formats the altimter element into a string with hPa and inHg values
  
      Ex: 30.11 inHg (10.20 hPa)