Number carry achieve pendulum installed on both sides or number 0 sunken displacement can be printed 4, 5, 6 or 7, steel material, the number of machines have horizontal and vertical two kinds, with (or without band) Reset spring back or carry-forward mode. Applicable to various types of NP series web presses and paper forms printing presses. It can be based on user requirements, it has a long life, into the reset flexible, low rate of wrong number. The machine printed numbers reading direction is vertical or flat shape to the printed paper feed direction. Glyph font height and bits and spacing according to customer request.