150 mm Small Wing Rule
This 150mm wing rule is the 'standard' rule for measuring passerines. Measures from 0 to 150mm in 1mm increments.
For larger birds try our 300mm Wing Rule.
View other products from the same publisher
There are currently no organisations listed for this subjectIf you are involved in a scientific, conservation or environmental organisation and would like to be listed, please see our NHBS-Xchange information page.