These will help you quickly align sheets/drops with either axis on your table. The Y-axis tool leaves 1/8 - 3/16" before the carriage hits the mounting bolt. The X-axis tool can be used anywhere on the table really. There's obviously a window of accuracy with them, and you'll have to make sure your torch stays on the sheet during setup/cutting. They're more so for just squaring material to the axis'.
2 months ago