Abstract: A trim marking tool is disclosed which utilizes a plurality of pins located in a slot and movable therein such that the pins can be aligned to conform to measurements taken. The pins are locked into position and a sheet material is placed on a base of the tool with an upper member containing the pins then closed on a lower member such that the pins indent the sheet material for indicating that either bending or cutting is required. Once the tool is set for a particular style window or door, marking of numerous pieces of sheet material can proceed without resetting and pieces bent and cut accordingly.