Precision machining, professional architectural grade quality, and genuine solid brass are features that define this 12 inch sliding rod casement adjuster made by idh by St. Simons of California. Designed for use on Outswing hinged windows, this is an authentic period reproduction of an American classic. With its serrated knob, the window can be positioned in open and closed and any position in between. A 10 inch 21002-005 is also available.