TallyGenicom | Tally Dascom Sensor Position Ruler, 047823, is a shared replacement part used on the Tally Dascom Dot Matrix Printer models T2150, T2150S and T2250, as well as the TallyGenicom Dot Matrix Models T2145, T2245, T2145S, T2150, T2250, LA550N, LA550W, T2040, T2140 and some non-published legacy models.