How do I know it's not that accurate? People who buy things from Woodpeckers tell me it's not! I was only joking. Of course, that's not as good as woodpeckers, but for me that's more than enough. I make a lot of pocket hole carpentry and they work great for this application. They are 90Β° and work fantastic for everything I do. However, it's not as good as Woodpecker products, but... It's about 1/10 the price. I will continue to buy (almost) everything Milescraft sells because it is the best price on the market.