Designed exclusively for use in the book publishing industry, the Cubiscan 30 uses laser technology to give precise tolerances and total control as you measure the length and width of books. Plus, you can measure a book"s thickness thanks to a linear caliper (a small, plunger-like device) that rests on the book's cover and applies just enough pressure to compress the pages and give you the most accurate reading possible. As a result, you can easily determine the best box size or container for shipping your orders. Using the 30's high precision scale (accurate to 2 grams) you can also check order accuracy based on anticipated shipping weight. The process is simple, the results are exact. The savings can be staggering.