The string spacing is 18mm and the 5 mounting screw holes are 17mm apart so it should be a great addition to your short scale or narrow neck project.
The base plate measures approximately 45 x 80mm and is a genuine Wilkinson part which I have re-drilled to accept 18mm bass saddles. It is made of 2mm chromed steel. The saddles themselves are chromed steel or brass.
Supplied with 5 chrome mounting screws.