I love this corner template tool. I do a lot of handicrafts around the house, create unique items and build in my company. This angle ruler is ideal for everything from small repairs to complete renovations. To be honest, I find this to be the biggest time saver on projects I don't want to devote much time to, and accuracy isn't necessarily critical. For example, I used it as a corner template tool when I needed to replace an oddly shaped stone in my stone patio. I would typically use a ruler, square and tape measure to get the correct shape I wanted to replace. Instead I used this thing to recreate the size/shape of the broken stone. Then I simply marked the new stone with the shape/size of the template. Bam, exact match. What could have taken 90 minutes was done in 20. Time is precious and this thing only gave me 70 minutes.