units of LENGTH po and pi   (03/09/2016, 7:59 PM)

units of measurement found on a box of plastic bags made in china:
2 pi x 2 pi 3 3/8 po x 0.7 mil
also shown on the box as Si units:
(61 cm x 69 cm x 18 micrometers)

never seen pi or po as lengths-
does anyone know what they are?

 


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03/09/2016, 7:59 PM units of LENGTH po and pi
03/10/2016, 10:42 AM     Re: units of LENGTH po and pi