They open a 1/4" more for easier chart management, are nicely finished with a .055mm, riveted polyethelene backplate

• They open a 1/4" more for easier chart management, are nicely finished with a .055mm, riveted polyethelene backplate

They open a 1/4" more for easier chart management, are nicely finished with a .055mm, riveted polyethelene backplateASA