Designators

Designators are a category of items added by Nuclear Tech Mod.

Description
Designators (also known as Rangefinders) are used to set a target for a missile.

The most standard one, the GPS Rangefinder, requires the player to explicitly use it on a block in order to store the location. That can be difficult, in case the location is somewhere at the enemy's base.

The Laser Rangefinder only requires you to RMB in the direction of a block to store the target's location. That can be done from a distance, making using it a bit safer.

The Manual Rangefinder requires the player to simply input the target's X and Z coordinates. The POS button can also be used to set the target to the very block you are standing on, making it the universal designator.

Don't tell anyone, but a Darter that has fired a Withering Dart into a person is also a valid designator.