As a teacher, I regularly use a visualiser. I use visualisers to guide students through annotating texts and to mark work for demonstration purposes. I've used a number of different visualisers in recent years and this one is the stand-out best. The Pakatoo is robust, has a stable platform, is simple to use, has excellent autofocus, has a dimmable light for varied illumination and the neck is stable and easy to adjust. I highly recommend it.