Universal Wide Wing & Tail Ruler (15cm, 30cm, 60cm) vacutainer Measurements are available on both

Measurements are available on both sides

Will also cut plastic bands

ABOUT THE SIBLEY FIELD GUIDE TO BIRDS OF EASTERN NORTH AMERICA

enabling high catch efficiency when properly installed in high-traffic areas

Universal Wide Wing & Tail Ruler (15cm, 30cm, 60cm) vacutainer Measurements are available on bothOur wing rules are made from sturdy stainless steel with a universal wide stop that extend past the width of the rule. All sizes are 1" wide, the stops are 1 1 2" wide. Rule is double sided with numbers in descending order on opposite to allow for tail measurements. Available in Small (15cm), Medium (30cm), and Large (60cm).