Which of the following is NOT typically included in aircraft armament circuits test sets?

The correct answer is a multimeter, as it is generally not included in aircraft armament circuits test sets. Test sets for aircraft armament circuits are specifically designed to evaluate and troubleshoot the systems that control various weaponry and munitions on an aircraft.

An oscilloscope is essential in these test sets as it allows for the visualization of electrical signals, helping technicians analyze waveforms pertaining to the circuits involved in weapon systems. A power supply is also critical because it provides the necessary voltage and current needed to simulate operational conditions for testing these systems. Similarly, a frequency counter is important because it measures the frequency of signals, which is vital when assessing communication and data transmission within the armament circuits.

In contrast, while a multimeter is a versatile tool typically used for measuring voltage, current, and resistance, it may not be specialized enough for the specific requirements of testing aircraft armament circuits. The precision and analysis involved in assessing these complex weapon systems often necessitate more specialized equipment, which is why the multimeter is less commonly included in such test sets.