Tinker Tom

Tinker Tom or TT in code is the quartermaster and primary repairman for the Railroad, operating in the Commonwealth

Background
Tinker Tom is the engineer, inventor, and weapons expert. As the quartermaster of the organization, he is in charge of maintaining equipment for agents as well as researching new weapons and gadgets for them to use in their operations in the field. Tom works in the HQ. He comments that his peers tell him he has been "hitting the chems way too hard." When the DIA facility, named "Switchboard," was discovered in 2281, Tom was reassigned to it. It was there he discovered P.A.M.. During his time there, Tom also restored an Old World cutting edge handgun for use by newly-promoted heavy agent, Tommy Whispers.

In 2283, an Institute informant "Patriot" began attempting to communicate with the outside world. Tom was assigned the task of decrypting the encoded holotapes that were being sent out with escaped synths. Initially unsuccessful, Tom eventually made a breakthrough in 2284 when the coded message was simply two words, "Mass Fusion."

He is able to decode a courser chip, a requirement for entering the Institute. He has some skill with constructing and improving weaponry, as he had worked on what would become the railway rifle, a Railroad hunting rifle and the Deliverer pistol, among various other weapons Railroad agents utilize.

Other interactions
By progressing the Jackpot missions, Tinker Tom will begin to sell high-end weapons such as Gauss rifles and unique armored clothing items and will unlock the ability to add ballistic weave to drastically increasing the armors' defensive stats.

Appearances
Tinker Tom appears only in Fallout 4.

Bugs

 * Upon completing the first DIA cache mission for P.A.M., Drummer Boy will tell the Sole Survivor to speak to Tinker Tom. Tinker Tom should mention ballistic weave and have some armored under-apparel for sale but doesn't. This bug will prevent one from applying ballistic weave modifications.
 * If the Weathervane missions aren't complete and the Sole Survivor sides with the Institute during End of the Line, the mission will still be active, but reporting back to Tinker Tom won't allow the player to turn in the mission.