Use this North Arrow in photographs to show both orientation as well as metric scale (10 cm, 10 one cm, and 1 five cm) in unit excavations. Made of 2 inch by 10 millimeter white polyvinyl chloride. Also has hypotenuse and Metric/English conversions silk-screened on opposite side for a quick reference guide. Nylon stuff sack included. North Arrow 10057$20.95, 3/$59.85 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.