Columbia Marking Tools offers a preview of the mobile demonstration coach. This coach is equipped with over 12 operational marking machines. The marking methods include: impact, roll, dot-peen, scribe, and laser. While the coach travels throughout North America, you can visit it anytime via the Marking University Virtual Tour. This is a short introductory tour. There is no set time limit for the tour, and you can visit as many stations as you are interested in in any order.