Ludwig Precision Center-Finding Aluminum Straight Edge Ruler, 24-INCH, Silver

Like the thickness of this ruler. It is substantial. I do think the markings are not engraved which would be preferred. The only other change I would have the manufacturer add is a center hole to mark the material in use.Helpful to find center on material to facilitate setting the xy datum 0 point. Especially good for odd edged material.

Good for finding and marking the center for cutting

Such a simple idea and wish I had thought of it. Very handy, well made. I expect to get a lot of use out of it and do projects right the first time without getting frustrated. I bought other sizes as well.

A good center finding ruler -- a good size when you don't need to lay out larger picture elements. Time will tell how the markings hold up but 3 months in (in a commercial shop) there are no complaints.