gears 94 and 96 is respectively relatable to the class mounting cube 74 and the slogan mounting cube 72 preferably the sensor pair 103 and related slots 102 and apertures 107 are designed to detect the home positions of the wheel 94 and 96 and also 90 degree rotations the sensor pair 105 and related apertures 104 are designed to detect whether or not the printing surfaces of the slogan mounting cube 62 and the class mounting cube 64 respectively are flat not angled to print a short shaft 110 is formed on the mounting bracket 70 and includes a first ratchet lever 112 and a second ratchet lever 114 rotatively mounted on the short shaft 110 by any conventional means each ratchet lever 112 and 114 respectively includes a ratchet plate 116 having a first push arm 118 and second push arm 120 the push arms 118 and 120 of the respective ratchet levers 112 and 114 are aligned to interact with the star gear 92 of respective gear hubs 86 and 88 in a manner subsequently described one end of a first leaf spring 122 is fixably mounted to the mounting bracket 70 and in like manner a second leaf spring 124 is fixably mounted to the mounting bracket of 70 at one end the leaf springs 122 and 124 respectively are positioned to the mounting bracket 70 such that the other end of each leaf spring is biased against respective ratchet levers 112 and 114 in a first position to be biased in a star tooth of respective star gears 90 and 92 respectively referring more particularly to fig2 and 4 in operation a threaded track 130 rotatively driven by a motor 132 is rotatively mounted within the meter 17 by any conventional means a guide rod.