The Master Ruler
The Master Ruler is a revolutionary, unique, creative, and effective product for teaching to measure. “The Master Ruler” is actually several rulers in one. It is the only ruler of its kind that makes learning to measure easy and fun.
Address:
P.O. Box 906
Alpha, New Jersey 08865-0906
Phone: (908) 859-1788
Fax: (908) 859-3141
