Front:
POSTCARD HYGROSCOPE
WEATHER INDICATOR
* Works best when placed near
open window so that it is
exposed to outdoor air. Color
of fuzzy area forçasts weather:
BLUE .. . . . FAIR
PINK... . . . HUMID OR RAIN
PURPLE
.. . CHANGE
Back:
MESSAGE HERE
© Shackman, N.Y. 10001 No.1711S Printed in Hong Kong.
