T-Square slider

This is a slider that can fit onto a MAYES Brothers Drywall T-Square. This is a way to extend the edge out 3 inches to make it easier to measure 45 inches instead of the 48 to where the T would normally be. This is very useful for Robot Inspectors for FRC's 2020 game Infinite Recharge to help ensure that robots are not more than 45" tall.