October 3, 2019
Located on the bottom left and right of the lower sash, this pin slide into the shoe connected to the balance rod. Looking at the end of the pin, it is shaped like a "U" with sharper corners. The vertical sides of the "U" are 3/16" and the base of the "U" is 5/16".
The entire pin is 2 1/4" in length. There are 3 holes on the channel. 2 are close together. Starting on the left side furthest from the 2 that are close, the first hole is centered at 9/16", the second at 1 3/16", and the third at 1 1/2".