HST rulers
#1
Senior Member
Thread Starter
Join Date: Jul 2011
Location: Montana
Posts: 414
HST rulers
I saw this ruler somewhere but don't remember where. Using the Thangles it squares up the blocks before you open them up. I like using the papers but have trouble with keeping them all the same size and would love the ruler.
#3
Super Member
Join Date: Aug 2009
Location: The middle of an IL cornfield
Posts: 7,014
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