OK got it.

I think this is the site for the left hand adhesive tape

http://www.woodworkingshop.com/cgi-bin/D7A8121A/mac/qryitems.mac/itemDisplay?lenSgDsc=6MEATAPTAPE%20MEASURES&qryType=GRPSG

Somehow it's not letting us post a direct link to the product.  But if you go to the main page, and to the search, and type in "measuring tape" it will come up.