106-10 Osborne 10″ Wing Dividers. The nuts on the wing dividers are steel. Washers are on turned brass. The points are carefullyhardened and every care is taken with the thread of the screws which hold the legs in position on the wings. The springs are carefully tempured and are made for easy adjustment while holding the legs firmly. made to US Government Specifications. Forged steel, fully polished.