This is an example of a terrible bullnose corner installation - a result of eyeballing! This was installed by our builder and is in obvious need of replacement. It is evident that the corner trim is way off center and has been cut too large, see the accurate reference marks shown. Trim carpentry requires precision and attention to detail, neither of which can be achieved without the use of an accurate bullnose corner tool. It takes about 5 minutes to mark every corner of an entire floor using the BullNoseBoss - Accuracy made easy.