The Grand Design

The Grand Design is a tool that allows you to see the dimensions of whatever is selected, place any color wire and actuators, and remove them. It also contains the function of a Ruler. The Grand Design can be used at any part of the screen, regardless of block placement range.

When right clicking with the tool, a small menu will pop up at the cursor's position with six different buttons in a radial pattern. The buttons can be used to select which wire colors can be interacted with, whether to place actuators or not and whether the tool is in wrench mode or cutter mode.

Tips

 * This item is a great way to avoid early game traps, such as explosives and boulders, as well as building houses, and a far more compact way of storing all of your wiring tools. This reduces the need of wiring tools to essentially 2, The Grand Design and the Actuation Rod. In total, for all materials needed to make this, and the crafting station, costs 10 gold. This can be made post-Skeletron, permitting a goblin army has been defeated, and you have rescued the goblin.
 * for harvesting wire, the Wire Cutter or Multicolor Wrench might be the preferred tool because with the smart cursor it is easier to handle

History
Le Grand Design