could one in theory make an inertial guidance device in ksp 1.12 ?

[asap1]

nothing to add here everything important in title (eit)

[Scarecrow71]

For those of us that don't know what an inertial guidance device is:

Quote

An inertial navigation system (INS) is a navigation device that uses a computer, motion sensors (accelerometers) and rotation sensors (gyroscopes) to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the need for external references.^[1] Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors (magnetometers) and/or speed measuring devices. INSs are used on mobile robots^[2][3] and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft.^[4] Other terms used to refer to inertial navigation systems or closely related devices include inertial guidance system, inertial instrument, inertial measurement unit (IMU) and many other variations. Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous

That's the technical definition from Wikipedia (the link to the article is below).  I guess my first, and probably only, question on this is:  What is MechJeb missing that doesn't cover this?

Inertial navigation system - Wikipedia

[Tw1]

As mod, or as a gadget made of spaceship parts?