This is a very nice wing divider with a interchangeable point feature on one tip end. It is not marked by the maker, but we believe it to be made by PECK, STOW, & WILCOX CO. This one is 10" long as show in the pictures. It comes with a hardened phonograph tip in it, but you may also put in a lead tip or other phono points as you wish. There is some minor wear on the other tip, but it is sharp and in very good condition overall. A very nice design with the fine adjustment feature. The points are good and the joint is snug, all the adjustment work correctly as intended. A hard to find model very nice used condition overall! The PEXTO logo is that of Peck Stow & Wilcox Co., a well known, respected tool maker in the early 1900's.