torque wrench?

Measuring torque to tighten a fastener is only a little more accurate than doing it by feel do to the wide variation in friction in the threads. Because of this don't spend a bundle on a torque wrench.

The beam type is inherently the most accurate and consistent over time but is not very convenient to use. The click type is the most convenient to use. I would recommend a click type that goes to 150 ft-lbs and don't spend much over $50 for it.

If you go with the click type just make sure you turn it back down to zero after each use to ensure repeatability from use to use.